Add gpu::MailboxHolder to hold state for a gpu::Mailbox

content/renderer/media/android/webmediaplayer_android.h

Index: content/renderer/media/android/webmediaplayer_android.h
diff --git a/content/renderer/media/android/webmediaplayer_android.h b/content/renderer/media/android/webmediaplayer_android.h
index 3cdc6ac3e694a0c8dbfabd4074b8a2e4f421f6d8..5e13683e4aae248cb5734bf663af4ac7ef2b5722 100644
--- a/content/renderer/media/android/webmediaplayer_android.h
+++ b/content/renderer/media/android/webmediaplayer_android.h
@@ -31,14 +31,18 @@
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "ui/gfx/rect_f.h"
 
-namespace media {
-class MediaLog;
-}
-
 namespace blink {
 class WebFrame;
 }
 
+namespace gpu {
+struct MailboxHolder;
+}
+
+namespace media {
+class MediaLog;
+}
+
 namespace webkit {
 class WebLayerImpl;
 }
@@ -223,7 +227,7 @@ class WebMediaPlayerAndroid
   static void OnReleaseRemotePlaybackTexture(
       const scoped_refptr<base::MessageLoopProxy>& main_loop,
       const base::WeakPtr<WebMediaPlayerAndroid>& player,
-      uint32 sync_point);
+      const gpu::MailboxHolder* mailbox_holder);
 
  protected:
   // Helper method to update the playing state.