Switch to double for time calculations using playback rate.

media/blink/buffered_data_source.cc

 // Copyright 2013 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/blink/buffered_data_source.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 171 matching lines @@
 void BufferedDataSource::Abort() {
   DCHECK(render_task_runner_->BelongsToCurrentThread());
   {
     base::AutoLock auto_lock(lock_);
     StopInternal_Locked();
   }
   StopLoader();
   frame_ = NULL;
 }
 
-void BufferedDataSource::MediaPlaybackRateChanged(float playback_rate) {
+void BufferedDataSource::MediaPlaybackRateChanged(double playback_rate) {
   DCHECK(render_task_runner_->BelongsToCurrentThread());
   DCHECK(loader_.get());
 
-  if (playback_rate < 0.0f)
+  if (playback_rate < 0.0)
     return;
 
   playback_rate_ = playback_rate;
   loader_->SetPlaybackRate(playback_rate);
 }
 
 void BufferedDataSource::MediaIsPlaying() {
   DCHECK(render_task_runner_->BelongsToCurrentThread());
   media_has_played_ = true;
   UpdateDeferStrategy(false);
@@ skipping 344 matching lines @@
   }
 
   // If media is currently playing or the page indicated preload=auto or the
   // the server does not support the byte range request or we do not want to go
   // too far ahead of the read head, use threshold strategy to enable/disable
   // deferring when the buffer is full/depleted.
   loader_->UpdateDeferStrategy(BufferedResourceLoader::kCapacityDefer);
 }
 
 }  // namespace media