[Chromecast] Fix media session blocking tests.

content/browser/media/session/media_session_impl.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_SESSION_MEDIA_SESSION_IMPL_H_
 #define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_IMPL_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 67 matching lines @@
   ~MediaSessionImpl() override;
 
 #if defined(OS_ANDROID)
   static MediaSession* FromJavaMediaSession(
       const base::android::JavaRef<jobject>& j_media_session);
   MediaSessionAndroid* session_android() const {
     return session_android_.get();
   }
 #endif  // defined(OS_ANDROID)
 
-  void AddObserver(MediaSessionObserver* observer);
-  void RemoveObserver(MediaSessionObserver* observer);
-
   void NotifyMediaSessionMetadataChange(
       const base::Optional<MediaMetadata>& metadata);
   void NotifyMediaSessionActionsChange(
       const std::set<blink::mojom::MediaSessionAction>& actions);
 
   // Adds the given player to the current media session. Returns whether the
   // player was successfully added. If it returns false, AddPlayer() should be
   // called again later.
   CONTENT_EXPORT bool AddPlayer(MediaSessionPlayerObserver* observer,
                                 int player_id,
@@ skipping 30 matching lines @@
   CONTENT_EXPORT void Stop(MediaSession::SuspendType suspend_type) override;
 
   // Let the media session start ducking such that the volume multiplier is
   // reduced.
   CONTENT_EXPORT void StartDucking() override;
 
   // Let the media session stop ducking such that the volume multiplier is
   // recovered.
   CONTENT_EXPORT void StopDucking() override;
 
+  void AddObserver(MediaSessionObserver* observer) override;
+  void RemoveObserver(MediaSessionObserver* observer) override;
+
   // Returns if the session can be controlled by Resume() and Suspend calls
   // above.
   CONTENT_EXPORT bool IsControllable() const;
 
   // Returns if the session is currently active.
   CONTENT_EXPORT bool IsActive() const;
 
   // Returns if the session is currently suspended.
   // TODO(mlamouri): IsSuspended() below checks if the state is not ACTIVE
   // instead of checking if the state is SUSPENDED. In order to not have to
@@ skipping 160 matching lines @@
   ServicesMap services_;
   // The currently routed service (non-owned pointer).
   MediaSessionServiceImpl* routed_service_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaSessionImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_IMPL_H_