content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/public/test/mock_render_thread.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_TEST_MOCK_RENDER_THREAD_H_
 #define CONTENT_PUBLIC_TEST_MOCK_RENDER_THREAD_H_
 
 #include "base/memory/shared_memory.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
@@ skipping 26 matching lines @@
 
   // Provides access to the messages that have been received by this thread.
   IPC::TestSink& sink() { return sink_; }
 
   // RenderThread implementation:
   bool Send(IPC::Message* msg) override;
   scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() override;
   IPC::SyncChannel* GetChannel() override;
   std::string GetLocale() override;
   IPC::SyncMessageFilter* GetSyncMessageFilter() override;
-  scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() override;
+  scoped_refptr<base::SingleThreadTaskRunner> GetIOMessageLoopProxy() override;
   void AddRoute(int32 routing_id, IPC::Listener* listener) override;
   void RemoveRoute(int32 routing_id) override;
   int GenerateRoutingID() override;
   void AddFilter(IPC::MessageFilter* filter) override;
   void RemoveFilter(IPC::MessageFilter* filter) override;
   void AddObserver(RenderProcessObserver* observer) override;
   void RemoveObserver(RenderProcessObserver* observer) override;
   void SetResourceDispatcherDelegate(
       ResourceDispatcherDelegate* delegate) override;
   void EnsureWebKitInitialized() override;
@@ skipping 109 matching lines @@
 
   // Observers to notify.
   ObserverList<RenderProcessObserver> observers_;
 
   cc::TestSharedBitmapManager shared_bitmap_manager_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_MOCK_RENDER_THREAD_H_