Remove DeleteTask and convert remaining users.

content/browser/renderer_host/media/video_capture_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.
 //
 // VideoCaptureHost serves video capture related messages from
 // VideCaptureMessageFilter which lives inside the render process.
 //
 // This class is owned by BrowserRenderProcessHost, and instantiated on UI
 // thread, but all other operations and method calls happen on IO thread.
 //
@@ skipping 21 matching lines @@
 //      | < VideoCaptureMsg_StateChanged      |
 //      |         (kStopped)                  |
 //      v                                     v
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_HOST_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
+#include "base/message_loop_helpers.h"
 #include "content/browser/renderer_host/media/video_capture_controller.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "ipc/ipc_message.h"
 
 namespace content {
 class ResourceContext;
 }  // namespace content
 
 class CONTENT_EXPORT VideoCaptureHost
@@ skipping 17 matching lines @@
                              int buffer_id,
                              base::Time timestamp) OVERRIDE;
   virtual void OnFrameInfo(const VideoCaptureControllerID& id,
                            int width,
                            int height,
                            int frame_per_second) OVERRIDE;
   virtual void OnReadyToDelete(const VideoCaptureControllerID& id) OVERRIDE;
 
  private:
   friend class content::BrowserThread;
-  friend class DeleteTask<VideoCaptureHost>;
+  friend class base::DeleteHelper<VideoCaptureHost>;
   friend class MockVideoCaptureHost;
   friend class VideoCaptureHostTest;
 
   virtual ~VideoCaptureHost();
 
   // IPC message: Start capture on the VideoCaptureDevice referenced by
   // VideoCaptureParams::session_id. |device_id| is an id created by
   // VideCaptureMessageFilter to identify a session
   // between a VideCaptureMessageFilter and a VideoCaptureHost.
   void OnStartCapture(int device_id,
@@ skipping 49 matching lines @@
   // A map of VideoCaptureControllerID to its state and VideoCaptureController.
   EntryMap entries_;
 
   // Used to get a pointer to VideoCaptureManager to start/stop capture devices.
   const content::ResourceContext* resource_context_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_HOST_H_