Revert "content: Remove use of MessageLoopProxy and deprecated MessageLoop APIs"

content/browser/compositor/gpu_process_transport_factory.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/gpu_process_transport_factory.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
+#include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/profiler/scoped_tracker.h"
-#include "base/single_thread_task_runner.h"
-#include "base/thread_task_runner_handle.h"
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/output_surface.h"
 #include "cc/raster/task_graph_runner.h"
 #include "cc/surfaces/onscreen_display_client.h"
 #include "cc/surfaces/surface_display_output_surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/browser_compositor_output_surface.h"
 #include "content/browser/compositor/browser_compositor_overlay_candidate_validator.h"
@@ skipping 562 matching lines @@
           url,
           gpu_channel_host.get(),
           attrs,
           lose_context_when_out_of_memory,
           WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits(),
           NULL));
   return context.Pass();
 }
 
 void GpuProcessTransportFactory::OnLostMainThreadSharedContextInsideCallback() {
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
+  base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&GpuProcessTransportFactory::OnLostMainThreadSharedContext,
                  callback_factory_.GetWeakPtr()));
 }
 
 void GpuProcessTransportFactory::OnLostMainThreadSharedContext() {
   LOG(ERROR) << "Lost UI shared context.";
 
   // Keep old resources around while we call the observers, but ensure that
   // new resources are created if needed.
   // Kill shared contexts for both threads in tandem so they are always in
   // the same share group.
   scoped_refptr<cc::ContextProvider> lost_shared_main_thread_contexts =
       shared_main_thread_contexts_;
   shared_main_thread_contexts_  = NULL;
 
   scoped_ptr<GLHelper> lost_gl_helper = gl_helper_.Pass();
 
   FOR_EACH_OBSERVER(ImageTransportFactoryObserver,
                     observer_list_,
                     OnLostResources());
 
   // Kill things that use the shared context before killing the shared context.
   lost_gl_helper.reset();
   lost_shared_main_thread_contexts  = NULL;
 }
 
 }  // namespace content