Revert "refactor(testing): move common testing logic into test_injector"

This reverts commit b88a6d983f.

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

@@ -5,6 +5,7 @@ import {
   it,
   expect,
   beforeEach,
+  createTestInjectorWithRuntimeCompiler,
   beforeEachProviders,
   SpyObject,
   proxy

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

@@ -5,6 +5,7 @@ import {
   it,
   expect,
   beforeEach,
+  createTestInjectorWithRuntimeCompiler,
   beforeEachProviders,
   SpyObject,
   proxy