Flash joining MediaSession (non-stack implementation)

content/browser/media/session/audio_focus_manager.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_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_MANAGER_H_
 #define CONTENT_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_MANAGER_H_
 
+#include <list>
 #include <unordered_map>
 
 #include "base/memory/singleton.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 
 class MediaSession;
 class WebContents;
 
 class CONTENT_EXPORT AudioFocusManager {
  public:
   enum class AudioFocusType {
     Gain,
     GainTransientMayDuck,
   };
 
   // Returns Chromium's internal AudioFocusManager.
   static AudioFocusManager* GetInstance();
 
   void RequestAudioFocus(MediaSession* media_session, AudioFocusType type);
-
+  void RequestPepperAudioFocus(MediaSession* media_session);
   void AbandonAudioFocus(MediaSession* media_session);
+  void AbandonPepperAudioFocus(MediaSession* media_session);
 
  private:
   friend struct base::DefaultSingletonTraits<AudioFocusManager>;
   friend class AudioFocusManagerTest;
 
   // TODO(mlamouri): in order to allow multiple MediaSession per WebContents, we
   // will have to keep track of MediaSession's. Though, we can easily keep track
   // of WebContents' life time right now but not MediaSession's.
   class AudioFocusEntry : public WebContentsObserver {
    public:
@@ skipping 37 matching lines @@
   // Internal method to request audio focus of type AudioFocusType::Gain.
   void RequestAudioFocusGain(WebContents* web_contents);
 
   // Removes the entry associated with |web_contents| from the
   // |transient_entries_| if there is one.
   void MaybeRemoveTransientEntry(WebContents* web_contents);
 
   // Removes the focused session if it is associated with |web_contents|.
   void MaybeRemoveFocusEntry(WebContents* web_contents);
 
+  void MaybeRemovePepperEntry(WebContents* web_contents);
+
+  void UpdatePepperFocus() const;
+
   std::unordered_map<WebContents*, std::unique_ptr<AudioFocusEntry>>
       transient_entries_;
   std::unique_ptr<AudioFocusEntry> focus_entry_;
+  std::list<std::unique_ptr<AudioFocusEntry>> pepper_entries_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_MANAGER_H_