feat(core): introduce support for animations

Closes #8734

modules/@angular/platform-browser/src/web_workers/worker/renderer.ts

@@ -17,6 +17,8 @@ import {MessageBus} from '../shared/message_bus';
 import {ObservableWrapper} from '../../../src/facade/async';
 import {deserializeGenericEvent} from './event_deserializer';
 
+import {AnimationKeyframe, AnimationPlayer, AnimationStyles} from '../../../core_private';
+
 @Injectable()
 export class WebWorkerRootRenderer implements RootRenderer {
   private _messageBroker;
@@ -241,6 +243,12 @@ export class WebWorkerRenderer implements Renderer, RenderStoreObject {
       this._runOnService('listenDone', [new FnArg(unlistenCallbackId, null)]);
     };
   }
+
+  animate(element: any, startingStyles: AnimationStyles, keyframes: AnimationKeyframe[], duration: number, delay: number,
+          easing: string): AnimationPlayer {
+      // TODO
+      return null;
+  }
 }
 
 export class NamedEventEmitter {

modules/@angular/platform-browser/src/web_workers/worker/worker_adapter.ts

@@ -152,4 +152,5 @@ export class WorkerDomAdapter extends DomAdapter {
   getAnimationPrefix(): string { throw "not implemented"; }
   getTransitionEnd(): string { throw "not implemented"; }
   supportsAnimation(): boolean { throw "not implemented"; }
-}
+  supportsWebAnimation(): boolean { throw "not implemented"; }
+}