feat(change_detection): generate checkNoChanges only in dev mode

modules/angular2/test/transform/integration/two_annotations_files/expected/bar.ng_deps.dart

@@ -91,6 +91,8 @@ class _MyComponent_ChangeDetector0 extends _gen.AbstractChangeDetector {
     _alreadyChecked = true;
   }
 
+  void checkNoChanges() {this.runDetectChanges(true);}
+
   void callOnAllChangesDone() {
     dispatcher.notifyOnAllChangesDone();
   }