Migrating MediaSession messages to mojo

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 <memory>
-
-#include "base/id_map.h"
-#include "base/macros.h"
-#include "base/optional.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,
-      std::unique_ptr<blink::WebMediaSessionActivateCallback> callback);
-  void Deactivate(
-      int session_id,
-      std::unique_ptr<blink::WebMediaSessionDeactivateCallback> callback);
-  void SetMetadata(
-      int session_id, const base::Optional<MediaMetadata>& metadata);
-
-  void OnDidActivate(int request_id, bool success);
-  void OnDidDeactivate(int request_id);
-
- private:
-  friend class WebMediaSessionTest;
-
-  // RenderFrameObserver implementation.
-  void OnDestruct() override;
-
-  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_