Mute audio for Spitzer playbacks that haven't received focus yet.

content/browser/media/android/media_session.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_MEDIA_SESSION_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_SESSION_H_
 
 #include <jni.h>
 #include <stddef.h>
 
@@ skipping 86 matching lines @@
   // above.
   bool IsControllable() const;
 
   // Returns if the session is currently suspended.
   bool IsSuspended() const;
 
  private:
   friend class content::WebContentsUserData<MediaSession>;
   friend class ::MediaSessionBrowserTest;
 
-  // Resets the |j_media_session_| ref to prevent calling the Java backend
-  // during content_browsertests.
-  void ResetJavaRefForTest();
-  bool IsActiveForTest() const;
-  Type audio_focus_type_for_test() const;
-  void RemoveAllPlayersForTest();
-  MediaSessionUmaHelper* uma_helper_for_test();
-
   enum class State {
     ACTIVE,
     SUSPENDED,
     INACTIVE
   };
 
   enum class SuspendType {
     // Suspended by the system because a transient sound needs to be played.
     SYSTEM,
     // Suspended by the UI.
@@ skipping 41 matching lines @@
   // Notifies WebContents about the state change of the media session.
   void UpdateWebContents();
 
   // Internal method that should be used instead of setting audio_focus_state_.
   // It sets audio_focus_state_ and notifies observers about the state change.
   void SetAudioFocusState(State audio_focus_state);
 
   base::android::ScopedJavaGlobalRef<jobject> j_media_session_;
   PlayersMap players_;
 
+  // The value returned by RequestSystemAudioFocus() when |j_media_session_| is
+  // unavailable.  Used for testing.
+  bool default_system_audio_focus_response_;
+
   State audio_focus_state_;
   SuspendType suspend_type_;
   Type audio_focus_type_;
 
   MediaSessionUmaHelper uma_helper_;
 
   // The volume multiplier of this session. All players in this session should
   // multiply their volume with this multiplier to get the effective volume.
   double volume_multiplier_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaSession);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_SESSION_H_