Implement MediaSession on top of the WebMediaPlayerDelegate.

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 "build/build_config.h"
 #include "content/browser/power_save_blocker_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
@@ skipping 23 matching lines @@
   }
 }
 
 bool MediaWebContentsObserver::OnMessageReceived(
     const IPC::Message& msg,
     RenderFrameHost* render_frame_host) {
   bool handled = true;
   // TODO(dalecurtis): These should no longer be FrameHostMsg.
   IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(MediaWebContentsObserver, msg,
                                    render_frame_host)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_MediaDestroyedNotification,
+                        OnMediaDestroyedNotification)
     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPlayingNotification,
                         OnMediaPlayingNotification)
     IPC_MESSAGE_HANDLER(FrameHostMsg_MediaPausedNotification,
                         OnMediaPausedNotification)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void MediaWebContentsObserver::OnMediaDestroyedNotification(
+    RenderFrameHost* render_frame_host,
+    int64_t player_cookie) {
+  OnMediaPausedNotification(render_frame_host, player_cookie, true);
+}
+
 void MediaWebContentsObserver::OnMediaPlayingNotification(
     RenderFrameHost* render_frame_host,
     int64_t player_cookie,
     bool has_video,
     bool has_audio,
-    bool is_remote) {
+    bool is_remote,
+    base::TimeDelta duration) {
   // Ignore the videos playing remotely and don't hold the wake lock for the
   // screen. TODO(dalecurtis): Is this correct? It means observers will not
   // receive play and pause messages.
   if (is_remote)
     return;
 
   const MediaPlayerId id(render_frame_host, player_cookie);
   if (has_audio) {
     AddMediaPlayerEntry(id, &active_audio_players_);
 
@@ skipping 15 matching lines @@
     }
   }
 
   // Notify observers of the new player.
   DCHECK(has_audio || has_video);
   static_cast<WebContentsImpl*>(web_contents())->MediaStartedPlaying(id);
 }
 
 void MediaWebContentsObserver::OnMediaPausedNotification(
     RenderFrameHost* render_frame_host,
-    int64_t player_cookie) {
+    int64_t player_cookie,
+    bool reached_end_of_stream) {
   const MediaPlayerId id(render_frame_host, player_cookie);
   const bool removed_audio = RemoveMediaPlayerEntry(id, &active_audio_players_);
   const bool removed_video = RemoveMediaPlayerEntry(id, &active_video_players_);
   MaybeReleasePowerSaveBlockers();
 
   if (removed_audio || removed_video) {
     // Notify observers the player has been "paused".
     static_cast<WebContentsImpl*>(web_contents())->MediaStoppedPlaying(id);
   }
 }
@@ skipping 98 matching lines @@
   if (it == player_map->end())
     return;
 
   for (int64_t player_cookie : it->second)
     removed_players->insert(MediaPlayerId(render_frame_host, player_cookie));
 
   player_map->erase(it);
 }
 
 }  // namespace content