Revert of cc: Move worker context BindToCurrentThread/SetupLock calls out of cc::OutputSurface.

cc/test/test_context_provider.h

Index: cc/test/test_context_provider.h
diff --git a/cc/test/test_context_provider.h b/cc/test/test_context_provider.h
index 8f128f1f7488eec54cbb14f8f6977051c9006273..82b3e612d681344d71d0dbf603f51dcfc8f437a7 100644
--- a/cc/test/test_context_provider.h
+++ b/cc/test/test_context_provider.h
@@ -25,10 +25,6 @@
     CreateCallback;
 
   static scoped_refptr<TestContextProvider> Create();
-  // Creates a worker context provider that doesn't need to be bound to a
-  // thread and can be used on any thread. This is equivalent to:
-  // Create(); BindToCurrentThread(); SetupLock(); DetachFromThread().
-  static scoped_refptr<TestContextProvider> CreateWorker();
   static scoped_refptr<TestContextProvider> Create(
       scoped_ptr<TestWebGraphicsContext3D> context);