Reduce jitter from uneven SincResampler buffer size requests.

media/base/fake_audio_render_callback.cc

 // Copyright (c) 2012 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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include <cmath>
 
 #include "media/base/fake_audio_render_callback.h"
@@ skipping 25 matching lines @@
   // Copy first channel into the rest of the channels.
   for (int i = 1; i < audio_bus->channels(); ++i)
     memcpy(audio_bus->channel(i), audio_bus->channel(0),
            number_of_frames * sizeof(*audio_bus->channel(i)));
 
   return number_of_frames;
 }
 
 double FakeAudioRenderCallback::ProvideInput(AudioBus* audio_bus,
                                              base::TimeDelta buffer_delay) {
-  Render(audio_bus, buffer_delay.InMilliseconds());
+  Render(audio_bus, buffer_delay.InMillisecondsF() + 0.5);
   return volume_;
 }
 
 }  // namespace media