fix: remove one more use of for..of

Author: alexeagle

modules/angular2/src/change_detection/parser/context_with_variable_bindings.js

@@ -31,8 +31,6 @@ export class ContextWithVariableBindings {
  }
 
  clearValues() {
- for (var k of MapWrapper.keys(this.varBindings)) {
- MapWrapper.set(this.varBindings, k, null);
- }
+ MapWrapper.clearValues(this.varBindings);
  }
 }

modules/angular2/src/facade/collection.dart

@@ -52,6 +52,11 @@ class MapWrapper {
  static void clear(Map m) {
  m.clear();
  }
+ static void clearValues(Map m) {
+ for (var k in m.keys) {
+ m[k] = null;
+ }
+ }
  static Iterable iterable(Map m) => new IterableMap(m);
  static Iterable keys(Map m) => m.keys;
  static Iterable values(Map m) => m.values;

modules/angular2/src/facade/collection.es6

@@ -25,6 +25,13 @@ export class MapWrapper {
  static size(m) {return m.size;}
  static delete(m, k) { m.delete(k); }
  static clear(m) { m.clear(); }
+ static clearValues(m) {
+ var keyIterator = m.keys();
+ var k;
+ while (!((k = keyIterator.next()).done)) {
+ m.set(k.value, null);
+ }
+ }
  static iterable(m) { return m; }
  static keys(m) { return m.keys(); }
  static values(m) { return m.values(); }