Switch to double for time calculations using playback rate.

media/mojo/services/mojo_renderer_service.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 "media/mojo/services/mojo_renderer_service.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 76 matching lines @@
       base::Bind(&MojoRendererService::OnFlushCompleted, weak_this_, callback));
 }
 
 void MojoRendererService::StartPlayingFrom(int64_t time_delta_usec) {
   DVLOG(2) << __FUNCTION__ << ": " << time_delta_usec;
   renderer_->StartPlayingFrom(
       base::TimeDelta::FromMicroseconds(time_delta_usec));
   SchedulePeriodicMediaTimeUpdates();
 }
 
-void MojoRendererService::SetPlaybackRate(float playback_rate) {
+void MojoRendererService::SetPlaybackRate(double playback_rate) {
   DVLOG(2) << __FUNCTION__ << ": " << playback_rate;
   DCHECK_EQ(state_, STATE_PLAYING);
   renderer_->SetPlaybackRate(playback_rate);
 }
 
 void MojoRendererService::SetVolume(float volume) {
   renderer_->SetVolume(volume);
 }
 
 void MojoRendererService::OnStreamReady(const mojo::Closure& callback) {
@@ skipping 73 matching lines @@
 }
 
 void MojoRendererService::OnFlushCompleted(const mojo::Closure& callback) {
   DVLOG(1) << __FUNCTION__;
   DCHECK_EQ(state_, STATE_FLUSHING);
   state_ = STATE_PLAYING;
   callback.Run();
 }
 
 }  // namespace media