cc: Remove the unused compositor thread variable and interface.

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 c7e14c069b00f4df3a8d7bf3076292d5a02850a4..54a066a235fb00883d051429ab5f7e27ea457e44 100644
--- a/ui/compositor/test/in_process_context_factory.cc
+++ b/ui/compositor/test/in_process_context_factory.cc
@@ -179,12 +179,6 @@ InProcessContextFactory::GetGpuMemoryBufferManager() {
   return &gpu_memory_buffer_manager_;
 }
 
-base::MessageLoopProxy* InProcessContextFactory::GetCompositorMessageLoop() {
-  if (!compositor_thread_)
-    return NULL;
-  return compositor_thread_->message_loop_proxy().get();
-}
-
 scoped_ptr<cc::SurfaceIdAllocator>
 InProcessContextFactory::CreateSurfaceIdAllocator() {
   return make_scoped_ptr(