Media Session: passing metadata from renderer/ to browser/.

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/browser/renderer_host/render_process_host_impl.h"
@@ skipping 280 matching lines @@
                         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_FORWARD(MediaSessionHostMsg_Activate,

[DaleCurtis, 2015/12/11 17:16:00]

nit: Can you move these three messages into a new
OnMediaSessionMessageReceived() function? As time goes on we want to remove all
the MediaPlayer messages, likely by transitioning them to Mojo.

This will also make it easier to share this code on desktop.

[mlamouri (slow - plz ping), 2016/01/05 16:01:16]

Done.

                         GetMediaSessionManager(render_frame_host),
                         BrowserMediaSessionManager::OnActivate)
     IPC_MESSAGE_FORWARD(MediaSessionHostMsg_Deactivate,
                         GetMediaSessionManager(render_frame_host),
                         BrowserMediaSessionManager::OnDeactivate)
+    IPC_MESSAGE_FORWARD(MediaSessionHostMsg_SetMetadata,
+                        GetMediaSessionManager(render_frame_host),
+                        BrowserMediaSessionManager::OnSetMetadata)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 bool MediaWebContentsObserver::OnMediaPlayerSetCdmMessageReceived(
     const IPC::Message& msg,
     RenderFrameHost* render_frame_host) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(
@@ skipping 63 matching lines @@
   for (auto it = media_player_managers_.begin();
        it != media_player_managers_.end(); ++it) {
     it->second->OnFrameInfoUpdated();
   }
 }
 #endif  // defined(VIDEO_HOLE)
 
 #endif  // defined(OS_ANDROID)
 
 }  // namespace content