Make List.from and Iterable.toList default to not growable.

sdk/lib/core/list.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.core;
 
 /**
  * A [List] is an indexable collection with a length.
  *
  * A `List` implementation can be choose not to support all methods
@@ skipping 49 matching lines @@
     return result;
   }
 
   /**
    * Creates an list with the elements of [other]. The order in
    * the list will be the order provided by the iterator of [other].
    *
    * The returned list is growable if [growable] is true, otherwise it's
    * a fixed length list.
    */
-  factory List.from(Iterable other, { bool growable: false }) {
+  factory List.from(Iterable other, { bool growable: true }) {
     List<E> list = new List<E>();
     for (E e in other) {
       list.add(e);
     }
     if (growable) return list;
     int length = list.length;
     List<E> fixedList = new List<E>(length);
     for (int i = 0; i < length; i++) {
       fixedList[i] = list[i];
     }
     return fixedList;
   }
 
   /**
    * Generate a `List` of elements.
    *
    * Generates a list of values, where the values are created by
    * calling the [generator] function for each index in the range
    * 0 .. [length] - 1.
    *
    * The created length's length is fixed unless [growable] is true.
    */
   factory List.generate(int length, E generator(int index),
-                       { bool growable: false }) {
+                       { bool growable: true }) {
     List<E> result;
     if (growable) {
       result = <E>[]..length = length;
     } else {
       result = new List<E>(length);
     }
     for (int i = 0; i < length; i++) {
       result[i] = generator(i);
     }
     return result;
@@ skipping 143 matching lines @@
    * not extendable.
    * If [length] is 0, this method does not do anything.
    * If [start] is the length of the list, this method inserts the
    * range at the end of the list.
    * Throws an [ArgumentError] if [length] is negative.
    * Throws an [RangeError] if [start] is negative or if
    * [start] is greater than the length of the list.
    */
   void insertRange(int start, int length, [E fill]);
 }