content: Add an overridable task runner to ChildThreadImpl

content/public/renderer/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_RENDERER_RENDER_THREAD_H_
 #define CONTENT_PUBLIC_RENDERER_RENDER_THREAD_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/shared_memory.h"
@@ skipping 32 matching lines @@
 
 class CONTENT_EXPORT RenderThread : virtual public ChildThread {
  public:
   // Returns the one render thread for this process.  Note that this can only
   // be accessed when running on the render thread itself.
   static RenderThread* Get();
 
   RenderThread();
   ~RenderThread() override;
 
-  virtual scoped_refptr<base::SingleThreadTaskRunner> GetTaskRunner() = 0;
   virtual IPC::SyncChannel* GetChannel() = 0;
   virtual std::string GetLocale() = 0;
   virtual IPC::SyncMessageFilter* GetSyncMessageFilter() = 0;
   virtual scoped_refptr<base::MessageLoopProxy> GetIOMessageLoopProxy() = 0;
 
   // Called to add or remove a listener for a particular message routing ID.
   // These methods normally get delegated to a MessageRouter.
   virtual void AddRoute(int32 routing_id, IPC::Listener* listener) = 0;
   virtual void RemoveRoute(int32 routing_id) = 0;
   virtual int GenerateRoutingID() = 0;
@@ skipping 67 matching lines @@
   // Gets the shutdown event for the process.
   virtual base::WaitableEvent* GetShutdownEvent() = 0;
 
   // Returns the ServiceRegistry for this thread.
   virtual ServiceRegistry* GetServiceRegistry() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDER_THREAD_H_