Added method map to Collection interface and all its implementations (except classes generated fr...

runtime/lib/growable_array.dart

Index: runtime/lib/growable_array.dart
===================================================================
--- runtime/lib/growable_array.dart	(revision 3161)
+++ runtime/lib/growable_array.dart	(working copy)
@@ -198,6 +198,10 @@
     }
   }
 
+  Collection map(f(T element)) {
+    return Collections.map(this, new GrowableObjectArray.withCapacity(length), f);
+  }
+
   Collection<T> filter(bool f(T element)) {
     return Collections.filter(this, new GrowableObjectArray<T>(), f);
   }