Change List constructors.

sdk/lib/_internal/compiler/implementation/lib/core_patch.dart

Index: sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
diff --git a/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart b/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
index 5df7994bb5e6f62199bdd7bc379146c5a56856cd..92067ecb6de7022e9934014807b0d0ed03284162 100644
--- a/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
+++ b/sdk/lib/_internal/compiler/implementation/lib/core_patch.dart
@@ -159,7 +159,44 @@ patch class _StopwatchImpl {
 
 // Patch for List implementation.
 patch class _ListImpl<E> {
-  patch factory List([int length]) => Primitives.newList(length);
+  patch factory List([int length = 0]) {
+    if ((length is !int) || (length < 0)) {
+      String lengthString = Error.safeToString(length);
+      throw new ArgumentError(
+          "Length must be a positive integer: $lengthString.");
+    }
+    return Primitives.newGrowableList(length);
+  }
+
+  patch factory List.fixedLength(int length, {E fill: null}) {
+    if ((length is !int) || (length < 0)) {
+      throw new ArgumentError("Length must be a positive integer: $length.");
+    }
+    List result = Primitives.newFixedList(length);
+    if (length != 0 && fill != null) {
+      for (int i = 0; i < result.length; i++) {
+        result[i] = fill;
+      }
+    }
+    return result;
+  }
+
+  /**
+   * Creates an extendable list of the given [length] where each entry is
+   * filled with [fill].
+   */
+  patch factory List.filled(int length, E fill) {
+    if ((length is !int) || (length < 0)) {
+      throw new ArgumentError("Length must be a positive integer: $length.");
+    }
+    List result = Primitives.newGrowableList(length);
+    if (length != 0 && fill != null) {
+      for (int i = 0; i < result.length; i++) {
+        result[i] = fill;
+      }
+    }
+    return result;
+  }
 
   patch factory List.from(Iterable<E> other) {
     var result = new List();