Revert 276939 "Decouple IPC::MessageFilter from IPC::Channel"

content/browser/renderer_host/media/video_capture_host.cc

 // 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.
 
 #include "content/browser/renderer_host/media/video_capture_host.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
 #include "content/common/media/video_capture_messages.h"
 
 namespace content {
 
 VideoCaptureHost::VideoCaptureHost(MediaStreamManager* media_stream_manager)
     : BrowserMessageFilter(VideoCaptureMsgStart),
       media_stream_manager_(media_stream_manager) {
 }
 
 VideoCaptureHost::~VideoCaptureHost() {}
 
 void VideoCaptureHost::OnChannelClosing() {
-  // Since the IPC sender is gone, close all requested VideoCaptureDevices.
+  // Since the IPC channel is gone, close all requested VideoCaptureDevices.
   for (EntryMap::iterator it = entries_.begin(); it != entries_.end(); ) {
     const base::WeakPtr<VideoCaptureController>& controller = it->second;
     if (controller) {
       VideoCaptureControllerID controller_id(it->first);
       media_stream_manager_->video_capture_manager()->StopCaptureForClient(
           controller.get(), controller_id, this, false);
       ++it;
     } else {
       // Remove the entry for this controller_id so that when the controller
       // is added, the controller will be notified to stop for this client
@@ skipping 317 matching lines @@
     return;
 
   if (it->second) {
     media_stream_manager_->video_capture_manager()->StopCaptureForClient(
         it->second.get(), controller_id, this, on_error);
   }
   entries_.erase(it);
 }
 
 }  // namespace content