Remove use of MessageLoopProxy

shell/child_main.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 <unistd.h>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_checker.h"
 #include "mojo/common/message_pump_mojo.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/platform_channel_pair.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/embedder/simple_platform_support.h"
 #include "mojo/edk/embedder/slave_process_delegate.h"
 #include "mojo/public/cpp/system/core.h"
 #include "shell/child_controller.mojom.h"
@@ skipping 163 matching lines @@
     DCHECK(!app_context->controller());
 
     scoped_ptr<ChildControllerImpl> impl(
         new ChildControllerImpl(app_context, unblocker));
 
     mojo::ScopedMessagePipeHandle host_message_pipe(
         mojo::embedder::CreateChannel(
             platform_channel.Pass(),
             base::Bind(&ChildControllerImpl::DidCreateChannel,
                        base::Unretained(impl.get())),
-            base::MessageLoopProxy::current()));
+            base::ThreadTaskRunnerHandle::Get()));
 
     impl->Bind(host_message_pipe.Pass());
 
     app_context->set_controller(impl.Pass());
   }
 
   void Bind(mojo::ScopedMessagePipeHandle handle) {
     binding_.Bind(handle.Pass());
   }
 
@@ skipping 99 matching lines @@
       base::Bind(&shell::ChildControllerImpl::Init,
                  base::Unretained(&app_context),
                  base::Passed(&platform_channel), blocker.GetUnblocker()));
   // This will block, then run whatever the controller wants.
   blocker.Block();
 
   app_context.Shutdown();
 
   return 0;
 }