Remove DeleteTask and convert remaining users.

content/browser/renderer_host/gpu_message_filter.h

 // Copyright (c) 2011 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_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
+#include "base/message_loop_helpers.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "ui/gfx/native_widget_types.h"
 
 class GpuProcessHost;
 struct GPUCreateCommandBufferConfig;
 class RenderWidgetHelper;
 
 namespace content {
 struct GPUInfo;
 }  // namespace content
 
 // A message filter for messages from the renderer to the GpuProcessHost(UIShim)
 // in the browser. Such messages are typically destined for the GPU process,
 // but need to be mediated by the browser.
 class GpuMessageFilter : public content::BrowserMessageFilter,
                          public base::SupportsWeakPtr<GpuMessageFilter> {
  public:
   GpuMessageFilter(int render_process_id,
                    RenderWidgetHelper* render_widget_helper);
 
   // content::BrowserMessageFilter methods:
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
  private:
   friend class content::BrowserThread;
-  friend class DeleteTask<GpuMessageFilter>;
+  friend class base::DeleteHelper<GpuMessageFilter>;
   virtual ~GpuMessageFilter();
 
   // Message handlers called on the browser IO thread:
   void OnEstablishGpuChannel(content::CauseForGpuLaunch,
                              IPC::Message* reply);
   void OnCreateViewCommandBuffer(
       int32 render_view_id,
       const GPUCreateCommandBufferConfig& init_params,
       IPC::Message* reply);
   // Helper callbacks for the message handlers.
   void EstablishChannelCallback(IPC::Message* reply,
                                 const IPC::ChannelHandle& channel,
                                 base::ProcessHandle gpu_process_for_browser,
                                 const content::GPUInfo& gpu_info);
   void CreateCommandBufferCallback(IPC::Message* reply, int32 route_id);
 
   int gpu_host_id_;
   int render_process_id_;
 
   scoped_refptr<RenderWidgetHelper> render_widget_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMessageFilter);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_GPU_MESSAGE_FILTER_H_