Let Flash join and be controlled by media session

content/browser/media/pepper/pepper_player_delegate.h

+// 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.
+
+#ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLAYER_DELEGATE
+#define CONTENT_RENDERER_PEPPER_PEPPER_PLAYER_DELEGATE
+
+#include "content/browser/media/session/media_session_observer.h"
+#include "ppapi/c/pp_instance.h"
+
+namespace content {
+class PepperWebContentsObserver;
+
+class PepperPlayerDelegate : public MediaSessionObserver {

[Zhiqiang Zhang (Slow), 2016/06/13 17:40:19]

Do you prefer to put "pepper/*" into "content/browser/media/" or
"content/browser/media/session"?

The latter seems better for code review, since we don't require reviewers from
content/ then.

[mlamouri (slow - plz ping), 2016/06/23 13:23:20]

I guess this could be in media/session/.

+ public:
+  explicit PepperPlayerDelegate(
+      PepperWebContentsObserver* pepper_web_contents_observer,
+      PP_Instance pp_instance);
+  ~PepperPlayerDelegate() override;
+
+  void OnSuspend(int player_id) override;
+  void OnResume(int player_id) override;
+  void OnSetVolumeMultiplier(int player_id,
+                             double volume_multiplier) override;
+
+  void OnSetVolume(int player_id, double volume);
+
+ private:
+  PepperWebContentsObserver* pepper_web_contents_observer_;
+  PP_Instance pp_instance_;
+};
+}
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLAYER_DELEGATE