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

content/renderer/media/android/renderer_media_session_manager.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_SESSION_MANAGER_H_
 #define CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_SESSION_MANAGER_H_
 
 #include <map>
 
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "third_party/WebKit/public/platform/modules/mediasession/WebMediaSession.h"
 
 namespace content {
 
 class WebMediaSessionAndroid;
+struct MediaMetadata;
 
 class CONTENT_EXPORT RendererMediaSessionManager : public RenderFrameObserver {
  public:
   RendererMediaSessionManager(RenderFrame* render_frame);
   ~RendererMediaSessionManager() override;
 
   // RenderFrameObserver override.
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   int RegisterMediaSession(WebMediaSessionAndroid* session);
   void UnregisterMediaSession(int session_id);
 
   void Activate(int session_id,
                 scoped_ptr<blink::WebMediaSessionActivateCallback> callback);
   void Deactivate(
       int session_id,
       scoped_ptr<blink::WebMediaSessionDeactivateCallback> callback);
+  void SetMetadata(int session_id, const content::MediaMetadata& metadata);

[jochen (gone - plz use gerrit), 2015/12/14 12:38:30]

you're already in namespace content here

[mlamouri (slow - plz ping), 2016/01/05 16:01:17]

Done.

 
   void OnDidActivate(int request_id, bool success);
   void OnDidDeactivate(int request_id);
 
  private:
   friend class WebMediaSessionTest;
 
   std::map<int, WebMediaSessionAndroid*> sessions_;
   int next_session_id_;
 
   using ActivationRequests =
       IDMap<blink::WebMediaSessionActivateCallback, IDMapOwnPointer>;
   ActivationRequests pending_activation_requests_;
 
   using DeactivationRequests =
       IDMap<blink::WebMediaSessionDeactivateCallback, IDMapOwnPointer>;
   DeactivationRequests pending_deactivation_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererMediaSessionManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_MEDIA_SESSION_MANAGER_H_