Remove DeleteTask and convert remaining users.

content/browser/renderer_host/media/audio_renderer_host.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.
 //
 // AudioRendererHost serves audio related requests from AudioRenderer which
 // lives inside the render process and provide access to audio hardware.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread, so we
 // need to be extra careful about the lifetime of this object. AudioManager is a
@@ skipping 40 matching lines @@
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_
 #pragma once
 
 #include <map>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/message_loop_helpers.h"
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_output_controller.h"
 #include "media/audio/simple_sources.h"
 
 class AudioManager;
@@ skipping 47 matching lines @@
   virtual void OnPlaying(media::AudioOutputController* controller) OVERRIDE;
   virtual void OnPaused(media::AudioOutputController* controller) OVERRIDE;
   virtual void OnError(media::AudioOutputController* controller,
                        int error_code) OVERRIDE;
   virtual void OnMoreData(media::AudioOutputController* controller,
                           AudioBuffersState buffers_state) OVERRIDE;
 
  private:
   friend class AudioRendererHostTest;
   friend class content::BrowserThread;
-  friend class DeleteTask<AudioRendererHost>;
+  friend class base::DeleteHelper<AudioRendererHost>;
   friend class MockAudioRendererHost;
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, CreateMockStream);
   FRIEND_TEST_ALL_PREFIXES(AudioRendererHostTest, MockStreamDataConversation);
 
   virtual ~AudioRendererHost();
 
   // Methods called on IO thread ----------------------------------------------
 
   // Audio related IPC message handlers.
   // Creates an audio output stream with the specified format. If this call is
@@ skipping 78 matching lines @@
   // A map of stream IDs to audio sources.
   AudioEntryMap audio_entries_;
 
   const content::ResourceContext* resource_context_;
   MediaObserver* media_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_RENDERER_HOST_H_