feat(test): allow tests to specify the platform and application providers used

With providers split into bundles, the test injector is now able to
use providers for a given bundle. Suggested provider lists for tests are
available in `angular2/platform/testing/<platform>`.

Change the providers for a test suite using `setBaseTestProviders`. This
should be done once at the start of the test suite, before any test cases
run.

BREAKING CHANGE: Tests are now required to use `setBaseTestProviders`
to set up. Assuming your tests are run on a browser, setup would change
as follows.

Before:

```js
// Somewhere in test setup
import {BrowserDomAdapter} from 'angular2/src/platform/browser/browser_adapter';
BrowserDomAdapter.makeCurrent
```

After:

```js
// Somewhere in the test setup
import {setBaseTestProviders} from 'angular2/testing';
import {
  TEST_BROWSER_PLATFORM_PROVIDERS,
  TEST_BROWSER_APPLICATION_PROVIDERS
} from 'angular2/platform/testing/browser';

setBaseTestProviders(TEST_BROWSER_PLATFORM_PROVIDERS,
                     TEST_BROWSER_APPLICATION_PROVIDERS);
```

Closes #5351, Closes #5585

Closes #5975

modules/angular2/test/compiler/runtime_metadata_spec.ts

@@ -83,19 +83,19 @@ export function main() {
       it('should return the directive metadatas',
          inject([RuntimeMetadataResolver], (resolver: RuntimeMetadataResolver) => {
            expect(resolver.getViewDirectivesMetadata(ComponentWithEverything))
-               .toEqual([resolver.getDirectiveMetadata(SomeDirective)]);
+               .toContain(resolver.getDirectiveMetadata(SomeDirective));
          }));
 
       describe("platform directives", () => {
-        beforeEachProviders(() => [provide(PLATFORM_DIRECTIVES, {useValue: [ADirective]})]);
+        beforeEachProviders(
+            () => [provide(PLATFORM_DIRECTIVES, {useValue: [ADirective], multi: true})]);
 
         it('should include platform directives when available',
            inject([RuntimeMetadataResolver], (resolver: RuntimeMetadataResolver) => {
              expect(resolver.getViewDirectivesMetadata(ComponentWithEverything))
-                 .toEqual([
-                   resolver.getDirectiveMetadata(ADirective),
-                   resolver.getDirectiveMetadata(SomeDirective)
-                 ]);
+                 .toContain(resolver.getDirectiveMetadata(ADirective));
+             expect(resolver.getViewDirectivesMetadata(ComponentWithEverything))
+                 .toContain(resolver.getDirectiveMetadata(SomeDirective));
            }));
       });
     });

modules/angular2/test/upgrade/metadata_spec.ts

@@ -16,7 +16,6 @@ import {getComponentInfo, parseFields} from 'angular2/src/upgrade/metadata';
 import {DOM} from 'angular2/src/platform/dom/dom_adapter';
 
 export function main() {
-  if (!DOM.supportsDOMEvents()) return;
   describe('upgrade metadata', () => {
     it('should extract component selector', () => {
       expect(getComponentInfo(ElementNameComponent).selector).toEqual('elementNameDashed');

modules/angular2/test/upgrade/upgrade_spec.ts

@@ -17,7 +17,6 @@ import {UpgradeAdapter} from 'angular2/upgrade';
 import * as angular from 'angular2/src/upgrade/angular_js';
 
 export function main() {
-  if (!DOM.supportsDOMEvents()) return;
   describe('adapter: ng1 to ng2', () => {
     it('should have angular 1 loaded', () => expect(angular.version.major).toBe(1));
 

modules/angular2/test/web_workers/shared/service_message_broker_spec.ts

@@ -28,7 +28,7 @@ export function main() {
   const RESULT = 20;
   const ID = "methodId";
 
-  beforeEachProviders(() => [provide(ON_WEB_WORKER, {useValue: true}), RenderStore]);
+  beforeEachProviders(() => [Serializer, provide(ON_WEB_WORKER, {useValue: true}), RenderStore]);
 
   describe("UIMessageBroker", () => {
     var messageBuses;

modules/angular2/test/web_workers/worker/renderer_integration_spec.ts

@@ -44,7 +44,10 @@ import {
   ServiceMessageBrokerFactory_
 } from 'angular2/src/web_workers/shared/service_message_broker';
 import {ChangeDetectorGenConfig} from 'angular2/src/core/change_detection/change_detection';
-
+import {
+  TEST_BROWSER_PLATFORM_PROVIDERS,
+  TEST_BROWSER_APPLICATION_PROVIDERS
+} from 'angular2/platform/testing/browser';
 
 export function main() {
   function createWebWorkerBrokerFactory(
@@ -83,13 +86,16 @@ export function main() {
 
     beforeEachProviders(() => {
       uiRenderStore = new RenderStore();
-      var testInjector = new TestInjector();
-      testInjector.addProviders([
+      var testUiInjector = new TestInjector();
+      testUiInjector.platformProviders = TEST_BROWSER_PLATFORM_PROVIDERS;
+      testUiInjector.applicationProviders = TEST_BROWSER_APPLICATION_PROVIDERS;
+      testUiInjector.addProviders([
+        Serializer,
         provide(RenderStore, {useValue: uiRenderStore}),
         provide(DomRootRenderer, {useClass: DomRootRenderer_}),
         provide(RootRenderer, {useExisting: DomRootRenderer})
       ]);
-      uiInjector = testInjector.createInjector();
+      uiInjector = testUiInjector.createInjector();
       var uiSerializer = uiInjector.get(Serializer);
       var domRootRenderer = uiInjector.get(DomRootRenderer);
       workerRenderStore = new RenderStore();