fix(DirectiveMetadata): add support for events, changeDetection

modules/angular2/test/transform/directive_metadata_extractor/all_tests.dart

@@ -109,6 +109,18 @@ void allTests() {
       expect(metadata.callOnAllChangesDone).toBe(true);
     });
 
+    it('should parse events.', () async {
+      var metadata = await readMetadata('directive_metadata_extractor/'
+          'directive_metadata_files/events.ng_deps.dart');
+      expect(metadata.events).toEqual(['onFoo', 'onBar']);
+    });
+
+    it('should parse changeDetection.', () async {
+      var metadata = await readMetadata('directive_metadata_extractor/'
+          'directive_metadata_files/changeDetection.ng_deps.dart');
+      expect(metadata.changeDetection).toEqual('CHECK_ONCE');
+    });
+
     it('should fail when a class is annotated with multiple Directives.',
         () async {
       var ngDeps = await NgDeps.parse(reader, new AssetId('a',

modules/angular2/test/transform/directive_metadata_extractor/directive_metadata_files/changeDetection.ng_deps.dart

@@ -0,0 +1,29 @@
+library examples.hello_world.index_common_dart.ng_deps.dart;
+
+import 'hello.dart';
+import 'package:angular2/angular2.dart'
+    show
+        bootstrap,
+        Component,
+        Directive,
+        View,
+        NgElement,
+        onChange,
+        onDestroy,
+        onInit,
+        onCheck,
+        onAllChangesDone;
+
+var _visited = false;
+void initReflector(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(HelloCmp, {
+      'factory': () => new HelloCmp(),
+      'parameters': const [const []],
+      'annotations': const [
+        const Component(changeDetection: 'CHECK_ONCE')
+      ]
+    });
+}

modules/angular2/test/transform/directive_metadata_extractor/directive_metadata_files/events.ng_deps.dart

@@ -0,0 +1,29 @@
+library examples.hello_world.index_common_dart.ng_deps.dart;
+
+import 'hello.dart';
+import 'package:angular2/angular2.dart'
+    show
+        bootstrap,
+        Component,
+        Directive,
+        View,
+        NgElement,
+        onChange,
+        onDestroy,
+        onInit,
+        onCheck,
+        onAllChangesDone;
+
+var _visited = false;
+void initReflector(reflector) {
+  if (_visited) return;
+  _visited = true;
+  reflector
+    ..registerType(HelloCmp, {
+      'factory': () => new HelloCmp(),
+      'parameters': const [const []],
+      'annotations': const [
+        const Component(events: ['onFoo', 'onBar'])
+      ]
+    });
+}

modules/angular2/test/transform/integration/simple_annotation_files/expected/bar.ng_meta.json

@@ -16,6 +16,8 @@
     "callOnInit": false,
     "callOnChange": false,
     "callOnAllChangesDone": false,
+    "events": [],
+    "changeDetection": null,
     "version": 1
   }
 }