media: remove unused functions: Renderer::HasAudio()/HasVideo()

content/browser/media/android/media_player_renderer.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_ANDROID_MEDIA_PLAYER_RENDERER_H_
 #define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 44 matching lines @@
   void Flush(const base::Closure& flush_cb) override;
   void StartPlayingFrom(base::TimeDelta time) override;
 
   // N.B: MediaPlayerBridge doesn't support variable playback rates (but it
   // could be exposed from MediaPlayer in the future). For the moment:
   // - If |playback_rate| is 0, we pause the video.
   // - For other |playback_rate| values, we start playing at 1x speed.
   void SetPlaybackRate(double playback_rate) override;
   void SetVolume(float volume) override;
   base::TimeDelta GetMediaTime() override;
-  bool HasAudio() override;
-  bool HasVideo() override;
 
   // media::MediaPlayerManager implementation
   media::MediaResourceGetter* GetMediaResourceGetter() override;
   media::MediaUrlInterceptor* GetMediaUrlInterceptor() override;
   void OnTimeUpdate(int player_id,
                     base::TimeDelta current_timestamp,
                     base::TimeTicks current_time_ticks) override;
   void OnMediaMetadataChanged(int player_id,
                               base::TimeDelta duration,
                               int width,
@@ skipping 52 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<MediaPlayerRenderer> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaPlayerRenderer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_PLAYER_RENDERER_H_