Hook up RendererMediaSessionManager with browser side

content/browser/media/android/browser_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_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_SESSION_MANAGER_H_
+#define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_SESSION_MANAGER_H_
+
+#include "base/basictypes.h"
+#include "content/browser/media/android/media_session.h"

[mlamouri (slow - plz ping), 2015/11/30 12:38:20]

nit: do you need this include?

[davve, 2015/11/30 14:19:48]

Not for more than pulling in ipc_message.h. Fixed.

+
+namespace content {
+
+class RenderFrameHost;
+
+class BrowserMediaSessionManager {
+ public:
+  BrowserMediaSessionManager(RenderFrameHost* render_frame_host);
+
+  // Message handlers.
+  void OnActivate(int session_id, int activation_id);
+  void OnDeactivate(int session_id, int deactivation_id);
+
+  int RoutingID();

[mlamouri (slow - plz ping), 2015/11/30 12:38:20]

nit: GetRoutingID(), probably |const| too.

[davve, 2015/11/30 14:19:48]

Done. (Maybe something to fix in BrowserMediaPlayerManager on a slow day)

+
+  bool Send(IPC::Message* msg);
+
+ private:
+  RenderFrameHost* const render_frame_host_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserMediaSessionManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_MEDIA_SESSION_MANAGER_H_