Media Session: passing metadata from renderer/ to browser/.

content/browser/media/android/browser_media_session_manager.h

Index: content/browser/media/android/browser_media_session_manager.h
diff --git a/content/browser/media/android/browser_media_session_manager.h b/content/browser/media/android/browser_media_session_manager.h
index c03bf1b2c055881f80e6a54af8f3c0cf3bc0bc62..13142b8c746000888089786a63c55172f640cde3 100644
--- a/content/browser/media/android/browser_media_session_manager.h
+++ b/content/browser/media/android/browser_media_session_manager.h
@@ -14,6 +14,7 @@ class Message;
 namespace content {
 
 class RenderFrameHost;
+struct MediaMetadata;
 
 class BrowserMediaSessionManager {
  public:
@@ -22,6 +23,7 @@ class BrowserMediaSessionManager {
   // Message handlers.
   void OnActivate(int session_id, int request_id);
   void OnDeactivate(int session_id, int request_id);
+  void OnSetMetadata(int session_id, const MediaMetadata& metadata);
 
   int GetRoutingID() const;