Implement media Cast button in Blink

content/browser/media/media_web_contents_observer.cc

 // Copyright 2014 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/media/media_web_contents_observer.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "content/browser/media/cdm/browser_cdm_manager.h"
 #include "content/common/media/cdm_messages.h"
@@ skipping 111 matching lines @@
                         BrowserMediaPlayerManager::OnSetVolume)
     IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_SetPoster,
                         GetMediaPlayerManager(render_frame_host),
                         BrowserMediaPlayerManager::OnSetPoster)
     IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_Release,
                         GetMediaPlayerManager(render_frame_host),
                         BrowserMediaPlayerManager::OnReleaseResources)
     IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_DestroyMediaPlayer,
                         GetMediaPlayerManager(render_frame_host),
                         BrowserMediaPlayerManager::OnDestroyPlayer)
+    IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_RequestRemotePlayback,
+                        GetMediaPlayerManager(render_frame_host),
+                        BrowserMediaPlayerManager::OnRequestRemotePlayback)
+    IPC_MESSAGE_FORWARD(
+        MediaPlayerHostMsg_RequestRemotePlaybackControl,
+        GetMediaPlayerManager(render_frame_host),
+        BrowserMediaPlayerManager::OnRequestRemotePlaybackControl)
 #if defined(VIDEO_HOLE)
     IPC_MESSAGE_FORWARD(MediaPlayerHostMsg_NotifyExternalSurface,
                         GetMediaPlayerManager(render_frame_host),
                         BrowserMediaPlayerManager::OnNotifyExternalSurface)
 #endif  // defined(VIDEO_HOLE)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
@@ skipping 55 matching lines @@
       iter != media_player_managers_.end(); ++iter) {
     BrowserMediaPlayerManager* manager = iter->second;
     manager->OnFrameInfoUpdated();
   }
 }
 #endif  // defined(VIDEO_HOLE)
 
 #endif  // defined(OS_ANDROID)
 
 }  // namespace content