Encrypted Media: Implement IPC based SetCdm().

content/browser/media/android/browser_media_player_manager.h

Index: content/browser/media/android/browser_media_player_manager.h
diff --git a/content/browser/media/android/browser_media_player_manager.h b/content/browser/media/android/browser_media_player_manager.h
index 8df9945d2eec6e1bbbf2faa22603accf007f8586..f4f26c343ea495b9df8451797ef005940df76234 100644
--- a/content/browser/media/android/browser_media_player_manager.h
+++ b/content/browser/media/android/browser_media_player_manager.h
@@ -220,13 +220,17 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
   // 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_;