fix(debug): make debug tools take ComponentRef

The debug tools used to take ApplicationRefs, which are the old return
type of bootstrap. Now bootstrap returns ComponentRef, so the debug
tools should be updated.

Closes #4203

modules/angular2/test/tools/spies.dart

@@ -1,6 +1,7 @@
 import 'package:angular2/test_lib.dart' show SpyObject;
-import 'package:angular2/core.dart'
-    show ApplicationRef, LifeCycle, Injector, bind;
+import 'package:angular2/core.dart' show LifeCycle, Injector, bind;
+import 'package:angular2/src/core/compiler/dynamic_component_loader.dart'
+    show ComponentRef;
 import 'dart:js';
 
 @proxy
@@ -9,19 +10,18 @@ class SpyLifeCycle extends SpyObject implements LifeCycle {
 }
 
 @proxy
-class SpyApplicationRef extends SpyObject implements ApplicationRef {
+class SpyComponentRef extends SpyObject implements ComponentRef {
   Injector injector;
 
-  SpyApplicationRef() {
-    this.injector = Injector.resolveAndCreate([
-      bind(LifeCycle).toClass(SpyLifeCycle)
-    ]);
+  SpyComponentRef() {
+    this.injector =
+        Injector.resolveAndCreate([bind(LifeCycle).toClass(SpyLifeCycle)]);
   }
 
   noSuchMethod(m) => super.noSuchMethod(m);
 }
 
 void callNgProfilerTimeChangeDetection([config]) {
-  context['ng']['profiler'].callMethod('timeChangeDetection',
-      config != null ? [config] : []);
+  context['ng']['profiler']
+      .callMethod('timeChangeDetection', config != null ? [config] : []);
 }

modules/angular2/test/tools/spies.ts

@@ -1,8 +1,9 @@
 import {SpyObject} from 'angular2/test_lib';
-import {ApplicationRef, LifeCycle, Injector, bind} from 'angular2/angular2';
+import {LifeCycle, Injector, bind} from 'angular2/angular2';
+import {ComponentRef} from 'angular2/src/core/compiler/dynamic_component_loader';
 import {global} from 'angular2/src/core/facade/lang';
 
-export class SpyApplicationRef extends SpyObject {
+export class SpyComponentRef extends SpyObject {
   injector;
   constructor() {
     super();

modules/angular2/test/tools/tools_spec.ts

@@ -11,11 +11,11 @@ import {
 } from 'angular2/test_lib';
 
 import {enableDebugTools, disableDebugTools} from 'angular2/tools';
-import {SpyApplicationRef, callNgProfilerTimeChangeDetection} from './spies';
+import {SpyComponentRef, callNgProfilerTimeChangeDetection} from './spies';
 
 export function main() {
   describe('profiler', () => {
-    beforeEach(() => { enableDebugTools((<any>new SpyApplicationRef())); });
+    beforeEach(() => { enableDebugTools((<any>new SpyComponentRef())); });
 
     afterEach(() => { disableDebugTools(); });