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

ui/compositor/test/in_process_context_factory.cc

Index: ui/compositor/test/in_process_context_factory.cc
diff --git a/ui/compositor/test/in_process_context_factory.cc b/ui/compositor/test/in_process_context_factory.cc
index 3bb555a80aa40a2b3877bcf0ec7b08648fe5cd7f..942947d5b1b020f3ebfcfe21cc7cf2097d2067cb 100644
--- a/ui/compositor/test/in_process_context_factory.cc
+++ b/ui/compositor/test/in_process_context_factory.cc
@@ -115,15 +115,6 @@
   scoped_refptr<InProcessContextProvider> worker_context_provider =
       InProcessContextProvider::CreateOffscreen(&gpu_memory_buffer_manager_,
                                                 &image_factory_);
-  if (worker_context_provider &&
-      !worker_context_provider->BindToCurrentThread())
-    worker_context_provider = nullptr;
-  if (worker_context_provider) {
-    worker_context_provider->SetupLock();
-    // Detach from thread to allow context to be destroyed on a different
-    // thread without being used.
-    worker_context_provider->DetachFromThread();
-  }
 
   scoped_ptr<cc::OutputSurface> real_output_surface;