Fix for Issue 2399.

lib/html/dartium/html_dartium.dart

Index: lib/html/dartium/html_dartium.dart
diff --git a/lib/html/dartium/html_dartium.dart b/lib/html/dartium/html_dartium.dart
index 4c3568322a8e51cd4bdbe0ad852da41434f3cd93..14ef105a3330a02c17f83bd09033128b92fb8e23 100644
--- a/lib/html/dartium/html_dartium.dart
+++ b/lib/html/dartium/html_dartium.dart
@@ -4739,10 +4739,22 @@ class _CanvasPixelArrayImpl extends _DOMTypeBase implements CanvasPixelArray {
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
   }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
+  }
+
+  // From Collection<int>:
 
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -4756,78 +4768,56 @@ class _CanvasPixelArrayImpl extends _DOMTypeBase implements CanvasPixelArray {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 }
 
 class _CanvasRenderingContextImpl extends _DOMTypeBase implements CanvasRenderingContext {
@@ -9376,11 +9366,23 @@ class _Float32ArrayImpl extends _ArrayBufferViewImpl implements Float32Array, Li
 
   num operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, num value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<num> mixins.
+  // num is the element type.
+
+  // From Iterable<num>:
+
+  Iterator<num> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<num>(this);
   }
 
+  // From Collection<num>:
+
   void add(num value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -9393,78 +9395,56 @@ class _Float32ArrayImpl extends _ArrayBufferViewImpl implements Float32Array, Li
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(num a, num b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(num element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(num element)) => _Collections.map(this, [], f);
 
-  int indexOf(num element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<num> filter(bool f(num element)) =>
+     _Collections.filter(this, <num>[], f);
 
-  int lastIndexOf(num element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(num element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(num element)) => _Collections.some(this, f);
 
-  num removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  num last() {
-    return this[length - 1];
-  }
+  // From List<num>:
 
-  void forEach(void f(num element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(num a, num b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(num element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(num element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<num> filter(bool f(num element)) {
-    return _Collections.filter(this, new List<num>(), f);
+  int lastIndexOf(num element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(num element)) {
-    return _Collections.every(this, f);
-  }
+  num last() => this[length - 1];
 
-  bool some(bool f(num element)) {
-    return _Collections.some(this, f);
+  num removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<num> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<num> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [num initialValue]) {
+  void insertRange(int start, int rangeLength, [num initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<num> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
+  List<num> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <num>[]);
 
-  bool isEmpty() {
-    return length == 0;
-  }
-
-  Iterator<num> iterator() {
-    return new _FixedSizeListIterator<num>(this);
-  }
+  // -- end List<num> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -9492,10 +9472,22 @@ class _Float64ArrayImpl extends _ArrayBufferViewImpl implements Float64Array, Li
 
   num operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, num value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
   }
+  // -- start List<num> mixins.
+  // num is the element type.
+
+  // From Iterable<num>:
+
+  Iterator<num> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<num>(this);
+  }
+
+  // From Collection<num>:
 
   void add(num value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -9509,78 +9501,56 @@ class _Float64ArrayImpl extends _ArrayBufferViewImpl implements Float64Array, Li
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(num a, num b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(num element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(num element)) => _Collections.map(this, [], f);
 
-  int indexOf(num element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<num> filter(bool f(num element)) =>
+     _Collections.filter(this, <num>[], f);
 
-  int lastIndexOf(num element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(num element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(num element)) => _Collections.some(this, f);
 
-  num removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  num last() {
-    return this[length - 1];
-  }
+  // From List<num>:
 
-  void forEach(void f(num element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(num a, num b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(num element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(num element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<num> filter(bool f(num element)) {
-    return _Collections.filter(this, new List<num>(), f);
+  int lastIndexOf(num element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(num element)) {
-    return _Collections.every(this, f);
-  }
+  num last() => this[length - 1];
 
-  bool some(bool f(num element)) {
-    return _Collections.some(this, f);
+  num removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<num> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<num> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [num initialValue]) {
+  void insertRange(int start, int rangeLength, [num initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<num> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
+  List<num> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <num>[]);
 
-  bool isEmpty() {
-    return length == 0;
-  }
-
-  Iterator<num> iterator() {
-    return new _FixedSizeListIterator<num>(this);
-  }
+  // -- end List<num> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -9852,10 +9822,22 @@ class _HTMLCollectionImpl extends _DOMTypeBase implements HTMLCollection {
 
   Node operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, Node value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
+  // -- start List<Node> mixins.
+  // Node is the element type.
+
+  // From Iterable<Node>:
+
+  Iterator<Node> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<Node>(this);
+  }
+
+  // From Collection<Node>:
 
   void add(Node value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -9869,78 +9851,56 @@ class _HTMLCollectionImpl extends _DOMTypeBase implements HTMLCollection {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(Node a, Node b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(Node element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(Node element)) => _Collections.map(this, [], f);
 
-  int indexOf(Node element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<Node> filter(bool f(Node element)) =>
+     _Collections.filter(this, <Node>[], f);
 
-  int lastIndexOf(Node element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(Node element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(Node element)) => _Collections.some(this, f);
 
-  Node removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  Node last() {
-    return this[length - 1];
-  }
+  // From List<Node>:
 
-  void forEach(void f(Node element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(Node a, Node b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(Node element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(Node element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<Node> filter(bool f(Node element)) {
-    return _Collections.filter(this, new List<Node>(), f);
+  int lastIndexOf(Node element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(Node element)) {
-    return _Collections.every(this, f);
-  }
+  Node last() => this[length - 1];
 
-  bool some(bool f(Node element)) {
-    return _Collections.some(this, f);
+  Node removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<Node> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<Node> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [Node initialValue]) {
+  void insertRange(int start, int rangeLength, [Node initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<Node> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<Node> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <Node>[]);
 
-  Iterator<Node> iterator() {
-    return new _FixedSizeListIterator<Node>(this);
-  }
+  // -- end List<Node> mixins.
 
   Node item(int index) {
     return _wrap(_ptr.item(_unwrap(index)));
@@ -10924,11 +10884,23 @@ class _Int16ArrayImpl extends _ArrayBufferViewImpl implements Int16Array, List<i
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -10941,78 +10913,56 @@ class _Int16ArrayImpl extends _ArrayBufferViewImpl implements Int16Array, List<i
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  bool isEmpty() {
-    return length == 0;
-  }
-
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -11040,11 +10990,23 @@ class _Int32ArrayImpl extends _ArrayBufferViewImpl implements Int32Array, List<i
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -11057,78 +11019,56 @@ class _Int32ArrayImpl extends _ArrayBufferViewImpl implements Int32Array, List<i
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -11156,11 +11096,23 @@ class _Int8ArrayImpl extends _ArrayBufferViewImpl implements Int8Array, List<int
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -11173,78 +11125,56 @@ class _Int8ArrayImpl extends _ArrayBufferViewImpl implements Int8Array, List<int
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  bool isEmpty() {
-    return length == 0;
-  }
-
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -11831,10 +11761,22 @@ class _MediaListImpl extends _DOMTypeBase implements MediaList {
 
   String operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, String value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
+  // -- start List<String> mixins.
+  // String is the element type.
+
+  // From Iterable<String>:
+
+  Iterator<String> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<String>(this);
+  }
+
+  // From Collection<String>:
 
   void add(String value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -11848,78 +11790,56 @@ class _MediaListImpl extends _DOMTypeBase implements MediaList {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(String a, String b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(String element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(String element)) => _Collections.map(this, [], f);
 
-  int indexOf(String element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<String> filter(bool f(String element)) =>
+     _Collections.filter(this, <String>[], f);
 
-  int lastIndexOf(String element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(String element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(String element)) => _Collections.some(this, f);
 
-  String removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  String last() {
-    return this[length - 1];
-  }
+  // From List<String>:
 
-  void forEach(void f(String element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(String a, String b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(String element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(String element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<String> filter(bool f(String element)) {
-    return _Collections.filter(this, new List<String>(), f);
+  int lastIndexOf(String element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(String element)) {
-    return _Collections.every(this, f);
-  }
+  String last() => this[length - 1];
 
-  bool some(bool f(String element)) {
-    return _Collections.some(this, f);
+  String removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<String> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<String> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [String initialValue]) {
+  void insertRange(int start, int rangeLength, [String initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<String> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<String> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <String>[]);
 
-  Iterator<String> iterator() {
-    return new _FixedSizeListIterator<String>(this);
-  }
+  // -- end List<String> mixins.
 
   void appendMedium(String newMedium) {
     _ptr.appendMedium(_unwrap(newMedium));
@@ -12299,10 +12219,22 @@ class _NamedNodeMapImpl extends _DOMTypeBase implements NamedNodeMap {
 
   Node operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, Node value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
+  // -- start List<Node> mixins.
+  // Node is the element type.
+
+  // From Iterable<Node>:
+
+  Iterator<Node> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<Node>(this);
+  }
+
+  // From Collection<Node>:
 
   void add(Node value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -12316,78 +12248,56 @@ class _NamedNodeMapImpl extends _DOMTypeBase implements NamedNodeMap {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(Node a, Node b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(Node element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(Node element)) => _Collections.map(this, [], f);
 
-  int indexOf(Node element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<Node> filter(bool f(Node element)) =>
+     _Collections.filter(this, <Node>[], f);
 
-  int lastIndexOf(Node element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(Node element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(Node element)) => _Collections.some(this, f);
 
-  Node removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  Node last() {
-    return this[length - 1];
-  }
+  // From List<Node>:
 
-  void forEach(void f(Node element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(Node a, Node b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(Node element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(Node element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<Node> filter(bool f(Node element)) {
-    return _Collections.filter(this, new List<Node>(), f);
+  int lastIndexOf(Node element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(Node element)) {
-    return _Collections.every(this, f);
-  }
+  Node last() => this[length - 1];
 
-  bool some(bool f(Node element)) {
-    return _Collections.some(this, f);
+  Node removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<Node> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<Node> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [Node initialValue]) {
+  void insertRange(int start, int rangeLength, [Node initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<Node> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<Node> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <Node>[]);
 
-  Iterator<Node> iterator() {
-    return new _FixedSizeListIterator<Node>(this);
-  }
+  // -- end List<Node> mixins.
 
   Node getNamedItem(String name) {
     return _wrap(_ptr.getNamedItem(_unwrap(name)));
@@ -12887,7 +12797,6 @@ class _NodeListImpl extends _DOMTypeBase implements NodeList {
 
   Node operator[](int index) => _wrap(_ptr[index]);
 
-
 }
 
 class _NodeSelectorImpl extends _DOMTypeBase implements NodeSelector {
@@ -18585,10 +18494,22 @@ class _StyleSheetListImpl extends _DOMTypeBase implements StyleSheetList {
 
   StyleSheet operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, StyleSheet value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
+  // -- start List<StyleSheet> mixins.
+  // StyleSheet is the element type.
+
+  // From Iterable<StyleSheet>:
+
+  Iterator<StyleSheet> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<StyleSheet>(this);
+  }
+
+  // From Collection<StyleSheet>:
 
   void add(StyleSheet value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -18602,78 +18523,56 @@ class _StyleSheetListImpl extends _DOMTypeBase implements StyleSheetList {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(StyleSheet a, StyleSheet b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(StyleSheet element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(StyleSheet element)) => _Collections.map(this, [], f);
 
-  int indexOf(StyleSheet element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<StyleSheet> filter(bool f(StyleSheet element)) =>
+     _Collections.filter(this, <StyleSheet>[], f);
 
-  int lastIndexOf(StyleSheet element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(StyleSheet element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(StyleSheet element)) => _Collections.some(this, f);
 
-  StyleSheet removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  StyleSheet last() {
-    return this[length - 1];
-  }
+  // From List<StyleSheet>:
 
-  void forEach(void f(StyleSheet element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(StyleSheet a, StyleSheet b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(StyleSheet element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(StyleSheet element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<StyleSheet> filter(bool f(StyleSheet element)) {
-    return _Collections.filter(this, new List<StyleSheet>(), f);
+  int lastIndexOf(StyleSheet element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(StyleSheet element)) {
-    return _Collections.every(this, f);
-  }
+  StyleSheet last() => this[length - 1];
 
-  bool some(bool f(StyleSheet element)) {
-    return _Collections.some(this, f);
+  StyleSheet removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<StyleSheet> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<StyleSheet> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [StyleSheet initialValue]) {
+  void insertRange(int start, int rangeLength, [StyleSheet initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<StyleSheet> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<StyleSheet> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <StyleSheet>[]);
 
-  Iterator<StyleSheet> iterator() {
-    return new _FixedSizeListIterator<StyleSheet>(this);
-  }
+  // -- end List<StyleSheet> mixins.
 
   StyleSheet item(int index) {
     return _wrap(_ptr.item(_unwrap(index)));
@@ -19343,10 +19242,22 @@ class _TouchListImpl extends _DOMTypeBase implements TouchList {
 
   Touch operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, Touch value) {
     throw new UnsupportedOperationException("Cannot assign element of immutable List.");
   }
+  // -- start List<Touch> mixins.
+  // Touch is the element type.
+
+  // From Iterable<Touch>:
+
+  Iterator<Touch> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<Touch>(this);
+  }
+
+  // From Collection<Touch>:
 
   void add(Touch value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
@@ -19360,78 +19271,56 @@ class _TouchListImpl extends _DOMTypeBase implements TouchList {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(Touch a, Touch b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(Touch element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(Touch element)) => _Collections.map(this, [], f);
 
-  int indexOf(Touch element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<Touch> filter(bool f(Touch element)) =>
+     _Collections.filter(this, <Touch>[], f);
 
-  int lastIndexOf(Touch element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(Touch element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(Touch element)) => _Collections.some(this, f);
 
-  Touch removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  Touch last() {
-    return this[length - 1];
-  }
+  // From List<Touch>:
 
-  void forEach(void f(Touch element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(Touch a, Touch b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(Touch element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(Touch element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<Touch> filter(bool f(Touch element)) {
-    return _Collections.filter(this, new List<Touch>(), f);
+  int lastIndexOf(Touch element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(Touch element)) {
-    return _Collections.every(this, f);
-  }
+  Touch last() => this[length - 1];
 
-  bool some(bool f(Touch element)) {
-    return _Collections.some(this, f);
+  Touch removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<Touch> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<Touch> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [Touch initialValue]) {
+  void insertRange(int start, int rangeLength, [Touch initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<Touch> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<Touch> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <Touch>[]);
 
-  Iterator<Touch> iterator() {
-    return new _FixedSizeListIterator<Touch>(this);
-  }
+  // -- end List<Touch> mixins.
 
   Touch item(int index) {
     return _wrap(_ptr.item(_unwrap(index)));
@@ -19570,11 +19459,23 @@ class _Uint16ArrayImpl extends _ArrayBufferViewImpl implements Uint16Array, List
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -19587,78 +19488,56 @@ class _Uint16ArrayImpl extends _ArrayBufferViewImpl implements Uint16Array, List
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -19686,11 +19565,23 @@ class _Uint32ArrayImpl extends _ArrayBufferViewImpl implements Uint32Array, List
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -19703,78 +19594,56 @@ class _Uint32ArrayImpl extends _ArrayBufferViewImpl implements Uint32Array, List
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {
@@ -19802,11 +19671,23 @@ class _Uint8ArrayImpl extends _ArrayBufferViewImpl implements Uint8Array, List<i
 
   int operator[](int index) => _wrap(_ptr[index]);
 
-
   void operator[]=(int index, int value) {
-    throw new UnsupportedOperationException("Cannot assign element of immutable List.");
+    return _ptr[index] = _unwrap(value);
+  }
+  // -- start List<int> mixins.
+  // int is the element type.
+
+  // From Iterable<int>:
+
+  Iterator<int> iterator() {
+    // Note: NodeLists are not fixed size. And most probably length shouldn't
+    // be cached in both iterator _and_ forEach method. For now caching it
+    // for consistency.
+    return new _FixedSizeListIterator<int>(this);
   }
 
+  // From Collection<int>:
+
   void add(int value) {
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
@@ -19819,78 +19700,56 @@ class _Uint8ArrayImpl extends _ArrayBufferViewImpl implements Uint8Array, List<i
     throw new UnsupportedOperationException("Cannot add to immutable List.");
   }
 
-  void sort(int compare(int a, int b)) {
-    throw new UnsupportedOperationException("Cannot sort immutable List.");
-  }
+  void forEach(void f(int element)) => _Collections.forEach(this, f);
 
-  void copyFrom(List<Object> src, int srcStart, int dstStart, int count) {
-    throw new UnsupportedOperationException("This object is immutable.");
-  }
+  Collection map(f(int element)) => _Collections.map(this, [], f);
 
-  int indexOf(int element, [int start = 0]) {
-    return _Lists.indexOf(this, element, start, this.length);
-  }
+  Collection<int> filter(bool f(int element)) =>
+     _Collections.filter(this, <int>[], f);
 
-  int lastIndexOf(int element, [int start = null]) {
-    if (start === null) start = length - 1;
-    return _Lists.lastIndexOf(this, element, start);
-  }
+  bool every(bool f(int element)) => _Collections.every(this, f);
 
-  int clear() {
-    throw new UnsupportedOperationException("Cannot clear immutable List.");
-  }
+  bool some(bool f(int element)) => _Collections.some(this, f);
 
-  int removeLast() {
-    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
-  }
+  bool isEmpty() => this.length == 0;
 
-  int last() {
-    return this[length - 1];
-  }
+  // From List<int>:
 
-  void forEach(void f(int element)) {
-    _Collections.forEach(this, f);
+  void sort(int compare(int a, int b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
   }
 
-  Collection map(f(int element)) {
-    return _Collections.map(this, [], f);
-  }
+  int indexOf(int element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
 
-  Collection<int> filter(bool f(int element)) {
-    return _Collections.filter(this, new List<int>(), f);
+  int lastIndexOf(int element, [int start]) {
+    if (start === null) start = length - 1;
+    return _Lists.lastIndexOf(this, element, start);
   }
 
-  bool every(bool f(int element)) {
-    return _Collections.every(this, f);
-  }
+  int last() => this[length - 1];
 
-  bool some(bool f(int element)) {
-    return _Collections.some(this, f);
+  int removeLast() {
+    throw new UnsupportedOperationException("Cannot removeLast on immutable List.");
   }
 
-  void setRange(int start, int length, List<int> from, [int startFrom]) {
+  // FIXME: implement these.
+  void setRange(int start, int rangeLength, List<int> from, [int startFrom]) {
     throw new UnsupportedOperationException("Cannot setRange on immutable List.");
   }
 
-  void removeRange(int start, int length) {
+  void removeRange(int start, int rangeLength) {
     throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
   }
 
-  void insertRange(int start, int length, [int initialValue]) {
+  void insertRange(int start, int rangeLength, [int initialValue]) {
     throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
   }
 
-  List<int> getRange(int start, int length) {
-    throw new NotImplementedException();
-  }
-
-  bool isEmpty() {
-    return length == 0;
-  }
+  List<int> getRange(int start, int rangeLength) =>
+      _Lists.getRange(this, start, rangeLength, <int>[]);
 
-  Iterator<int> iterator() {
-    return new _FixedSizeListIterator<int>(this);
-  }
+  // -- end List<int> mixins.
 
   void setElements(Object array, [int offset = null]) {
     if (offset === null) {