fix(transformer): Event getters now use property name not event name

modules/angular2/test/transform/bind_generator/events_files/bar.ng_deps.dart

@@ -13,7 +13,7 @@ void initReflector(reflector) {
       'parameters': const [],
       'annotations': const [
         const Directive(
-            selector: '[tool-tip]', events: ['onOpen', 'close: onClose'])
+            selector: '[tool-tip]', events: const ['onOpen', 'close: onClose'])
       ]
     });
 }

modules/angular2/test/transform/bind_generator/events_files/expected/bar.ng_deps.dart

@@ -13,8 +13,8 @@ void initReflector(reflector) {
       'parameters': const [],
       'annotations': const [
         const Directive(
-            selector: '[tool-tip]', events: ['onOpen', 'close: onClose'])
+            selector: '[tool-tip]', events: const ['onOpen', 'close: onClose'])
       ]
     })
-    ..registerGetters({'onOpen': (o) => o.onOpen, 'onClose': (o) => o.close});
+    ..registerGetters({'onOpen': (o) => o.onOpen, 'close': (o) => o.close});
 }