Encrypted Media: Implement IPC based SetCdm().

content/browser/media/android/browser_media_player_manager.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 202 matching lines @@
   // Similar to the above call, MediaPlayerAndroid must call this method when
   // releasing all the decoding resources.
   virtual void OnMediaResourcesReleased(int player_id);
 
   // An array of managed players.
   ScopedVector<media::MediaPlayerAndroid> players_;
 
   // An array of managed media DRM bridges.
   ScopedVector<media::MediaDrmBridge> drm_bridges_;
 
-  // a set of media keys IDs that are pending approval or approved to access
+  // A set of media keys IDs that are pending approval or approved to access
   // device DRM credentials.
   // These 2 sets does not cover all the EME videos. If a video only streams
   // clear data, it will not be included in either set.
   std::set<int> cdm_ids_pending_approval_;
   std::set<int> cdm_ids_approved_;
 
+  // A map of cdm_id -> player_id. When the player associated by |player_id| is
+  // available, player->SetDrmBridge(cdm_id) should be called.
+  std::map<int, int> pending_set_media_keys_map_;

[xhwang, 2014/03/10 23:36:32]

This is used when we call SetMediaKeys() before we call video.load(). The Player
is created only during video.load().

[ddorwin, 2014/03/11 04:06:33]

How do we have a player_id before video.load()? Isn't Blink set up to call
setCDM() when the load occurs?

[xhwang, 2014/03/12 01:07:52]

Removed. You are right:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

[ddorwin, 2014/03/18 22:51:08]

Is there a place that we can DCHECK this?

+
   // The fullscreen video view object or NULL if video is not played in
   // fullscreen.
   scoped_ptr<ContentVideoView> video_view_;
 
   // Player ID of the fullscreen media player.
   int fullscreen_player_id_;
 
   // The player ID pending to enter fullscreen.
   int pending_fullscreen_player_id_;
 
   // Whether the fullscreen player has been Release()-d.
   bool fullscreen_player_is_released_;
 
   WebContents* web_contents_;
 
   // Object for retrieving resources media players.
   scoped_ptr<media::MediaResourceGetter> media_resource_getter_;
 
   base::WeakPtrFactory<BrowserMediaPlayerManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMediaPlayerManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_PLAYER_MANAGER_H_