Pause EME player whose external surface is stolen by another player

content/public/browser/android/external_video_surface_container.h

Index: content/public/browser/android/external_video_surface_container.h
diff --git a/content/public/browser/android/external_video_surface_container.h b/content/public/browser/android/external_video_surface_container.h
index 38cbe5987bac76912dcae34ef3502e4e4ffe0f9a..f792dd3bb99eb8bc41bcf20e12b562b0a1a9777c 100644
--- a/content/public/browser/android/external_video_surface_container.h
+++ b/content/public/browser/android/external_video_surface_container.h
@@ -32,7 +32,11 @@ class CONTENT_EXPORT ExternalVideoSurfaceContainer {
       const SurfaceCreatedCB& surface_created_cb,
       const SurfaceDestroyedCB& surface_destroyed_cb) = 0;
 
-  // Called when a media player wants to release an external video surface.
+  // Returns id of player currently using the external video surface.
+  virtual int GetCurrentPlayerId() = 0;

[boliu, 2014/12/08 17:51:47]

How about define INVALID_PLAYER_ID in this class. Then
external_video_surface_container_impl.cc can convert the java one in
android_webivew/ to the native one in content/?

Update the comment about this too of course.

[Hugo Holgersson, 2014/12/09 15:35:28]

Done.
Sure! Done. GetCurrentPlayerId() now returns kInvalidPlayerId if it finds
INVALID_PLAYER_ID. I don't know JNI very well, so PTAL.

+
+  // Called when a media player wants to release a certain player's external
+  // video surface.
   virtual void ReleaseExternalVideoSurface(int player_id) = 0;
 
   // Called when the position and size of the video element which uses