Switch to double for time calculations using playback rate.

chromecast/media/base/switching_media_renderer.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 CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_
 #define CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/renderer.h"
@@ skipping 26 matching lines @@
       const ::media::StatisticsCB& statistics_cb,
       const ::media::BufferingStateCB& buffering_state_cb,
       const ::media::Renderer::PaintCB& paint_cb,
       const base::Closure& ended_cb,
       const ::media::PipelineStatusCB& error_cb,
       const base::Closure& waiting_for_decryption_key_cb) override;
   void SetCdm(::media::CdmContext* cdm_context,
               const ::media::CdmAttachedCB& cdm_attached_cb) override;
   void Flush(const base::Closure& flush_cb) override;
   void StartPlayingFrom(base::TimeDelta time) override;
-  void SetPlaybackRate(float playback_rate) override;
+  void SetPlaybackRate(double playback_rate) override;
   void SetVolume(float volume) override;
   base::TimeDelta GetMediaTime() override;
   bool HasAudio() override;
   bool HasVideo() override;
 
  private:
   // Returns the pointer to the actual renderer being used
   ::media::Renderer* GetRenderer() const;
 
   ::media::DemuxerStreamProvider* demuxer_stream_provider_;
   scoped_ptr<::media::Renderer> default_renderer_;
   scoped_ptr<::media::Renderer> cma_renderer_;
 
   DISALLOW_COPY_AND_ASSIGN(SwitchingMediaRenderer);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
 #endif  // CHROMECAST_MEDIA_BASE_SWITCHING_MEDIA_RENDERER_H_