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

sdk/lib/collection/queue.dart

Index: sdk/lib/collection/queue.dart
diff --git a/sdk/lib/collection/queue.dart b/sdk/lib/collection/queue.dart
index 0da66b5607ebfba71e02b05a7fe2c1c22e104ab3..975939a9da58f105a51a8fd877b86eda9c75a5cd 100644
--- a/sdk/lib/collection/queue.dart
+++ b/sdk/lib/collection/queue.dart
@@ -409,7 +409,7 @@ class ListQueue<E> extends Collection<E> implements Queue<E>{
     return _table[(_head + index) & (_table.length - 1)];
   }
 
-  List<E> toList({ bool growable: false }) {
+  List<E> toList({ bool growable: true }) {
     List<E> list;
     if (growable) {
       list = new List<E>()..length = length;