Switch to double for time calculations using playback rate.

media/mojo/services/mojo_renderer_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 "media/mojo/services/mojo_renderer_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 87 matching lines @@
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   {
     base::AutoLock auto_lock(lock_);
     time_ = time;
   }
 
   remote_media_renderer_->StartPlayingFrom(time.InMicroseconds());
 }
 
-void MojoRendererImpl::SetPlaybackRate(float playback_rate) {
+void MojoRendererImpl::SetPlaybackRate(double playback_rate) {
   DVLOG(2) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   remote_media_renderer_->SetPlaybackRate(playback_rate);
 }
 
 void MojoRendererImpl::SetVolume(float volume) {
   DVLOG(2) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   remote_media_renderer_->SetVolume(volume);
 }
@@ skipping 80 matching lines @@
 }
 
 void MojoRendererImpl::OnInitialized() {
   DVLOG(1) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
   if (!init_cb_.is_null())
     base::ResetAndReturn(&init_cb_).Run(PIPELINE_OK);
 }
 
 }  // namespace media