Implement MediaSession (metadata) per frame [NOT READY, HAS DEPENDENCY]

content/browser/media/android/media_web_contents_observer_android.cc

 // Copyright 2016 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.
 
 #include "content/browser/media/android/media_web_contents_observer_android.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "content/browser/media/android/browser_media_player_manager.h"
@@ skipping 45 matching lines @@
   return manager;
 }
 
 BrowserMediaSessionManager*
 MediaWebContentsObserverAndroid::GetMediaSessionManager(
     RenderFrameHost* render_frame_host) {
   auto it = media_session_managers_.find(render_frame_host);
   if (it != media_session_managers_.end())
     return it->second;
 
-  BrowserMediaSessionManager* manager =
-      new BrowserMediaSessionManager(render_frame_host);
+  BrowserMediaSessionManager* manager = new BrowserMediaSessionManager(
+      render_frame_host, static_cast<WebContentsImpl*>(web_contents()));
   media_session_managers_.set(render_frame_host, base::WrapUnique(manager));
   return manager;
 }
 
 BrowserSurfaceViewManager*
 MediaWebContentsObserverAndroid::GetSurfaceViewManager(
     RenderFrameHost* render_frame_host) {
   auto it = surface_view_managers_.find(render_frame_host);
   if (it != surface_view_managers_.end())
     return it->second;
@@ skipping 207 matching lines @@
     NOTREACHED() << "OnSetCdm: CDM not found for " << cdm_id;
     return;
   }
 
   // TODO(xhwang): This could possibly fail. In that case we should reject the
   // promise.
   media_player->SetCdm(cdm);
 }
 
 }  // namespace content