Switch to double for time calculations using playback rate.

chromecast/media/cma/pipeline/media_pipeline_impl.cc

 // Copyright 2014 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.
 
 #include "chromecast/media/cma/pipeline/media_pipeline_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
@@ skipping 245 matching lines @@
   if (clock_device_->GetState() == MediaClockDevice::kStateIdle)
     clock_device_->SetState(MediaClockDevice::kStateUninitialized);
 
   // Stop both the audio and video pipeline.
   if (has_audio_)
     audio_pipeline_->Stop();
   if (has_video_)
     video_pipeline_->Stop();
 }
 
-void MediaPipelineImpl::SetPlaybackRate(float rate) {
+void MediaPipelineImpl::SetPlaybackRate(double rate) {
   CMALOG(kLogControl) << __FUNCTION__ << " rate=" << rate;
   DCHECK(thread_checker_.CalledOnValidThread());
   target_playback_rate_ = rate;
   if (!buffering_controller_ || !buffering_controller_->IsBuffering())
     media_pipeline_device_->GetMediaClockDevice()->SetRate(rate);
 }
 
 AudioPipelineImpl* MediaPipelineImpl::GetAudioPipelineImpl() const {
   return audio_pipeline_.get();
 }
@@ skipping 87 matching lines @@
 
 void MediaPipelineImpl::OnError(::media::PipelineStatus error) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK_NE(error, ::media::PIPELINE_OK) << "PIPELINE_OK is not an error!";
   if (!client_.error_cb.is_null())
     client_.error_cb.Run(error);
 }
 
 }  // namespace media
 }  // namespace chromecast