Implement List<T> operations on dom types via manual mixins.

client/dom/generated/src/frog/StyleSheetList.dart

Index: client/dom/generated/src/frog/StyleSheetList.dart
diff --git a/client/dom/generated/src/frog/StyleSheetList.dart b/client/dom/generated/src/frog/StyleSheetList.dart
index bc3984b87ad7f93c5cbc7f323b0c4bfa90007bae..fa4e86da110d71f4ab630f0b72f56915bf99e8f3 100644
--- a/client/dom/generated/src/frog/StyleSheetList.dart
+++ b/client/dom/generated/src/frog/StyleSheetList.dart
@@ -3,11 +3,78 @@ class StyleSheetListJs extends DOMTypeJs implements StyleSheetList native "*Styl
 
   int get length() native "return this.length;";
 
-  StyleSheetJs operator[](int index) native;
+  StyleSheetJs operator[](int index) native "return this[index];";
 
   void operator[]=(int index, StyleSheetJs 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.");
+  }
+
+  void addLast(StyleSheet value) {
+    throw new UnsupportedOperationException("Cannot add to immutable List.");
+  }
+
+  void addAll(Collection<StyleSheet> collection) {
+    throw new UnsupportedOperationException("Cannot add to immutable List.");
+  }
+
+  void forEach(void f(StyleSheet element)) => _Collections.forEach(this, f);
+
+  Collection map(f(StyleSheet element)) => _Collections.map(this, [], f);
+
+  Collection<StyleSheet> filter(bool f(StyleSheet element)) =>
+     _Collections.filter(this, <StyleSheet>[], f);
+
+  bool every(bool f(StyleSheet element)) => _Collections.every(this, f);
+
+  bool some(bool f(StyleSheet element)) => _Collections.some(this, f);
+
+  bool isEmpty() => this.length == 0;
+
+  // From List<StyleSheet>:
+
+  void sort(int compare(StyleSheet a, StyleSheet b)) {
+    throw new UnsupportedOperationException("Cannot sort immutable List.");
+  }
+
+  int indexOf(StyleSheet element, [int start = 0]) =>
+      _Lists.indexOf(this, element, start, this.length);
+
+  int lastIndexOf(StyleSheet element, [int start = 0]) =>
+      _Lists.lastIndexOf(this, element, start);
+
+  StyleSheet last() => this[length - 1];
+
+  // FIXME: implement thesee.
+  void setRange(int start, int length, List<StyleSheet> from, [int startFrom]) {
+    throw new UnsupportedOperationException("Cannot setRange on immutable List.");
+  }
+  void removeRange(int start, int length) {
+    throw new UnsupportedOperationException("Cannot removeRange on immutable List.");
+  }
+  void insertRange(int start, int length, [StyleSheet initialValue]) {
+    throw new UnsupportedOperationException("Cannot insertRange on immutable List.");
+  }
+  List<StyleSheet> getRange(int start, int length) =>
+      _Lists.getRange(this, start, length, <StyleSheet>[]);
+
+  // -- end List<StyleSheet> mixins.
 
   StyleSheetJs item(int index) native;
 }