Add SSE optimizations to SincResampler.

media/base/audio_renderer_mixer_unittest.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 "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 392 matching lines @@
   }
 
   mixer_callback_->OnRenderError();
   for (size_t i = 0; i < mixer_inputs_.size(); ++i)
     mixer_inputs_[i]->Stop();
 }
 
 INSTANTIATE_TEST_CASE_P(
     AudioRendererMixerTest, AudioRendererMixerTest, testing::Values(
         // No resampling.
-        std::tr1::make_tuple(44100, 44100, 0.000000477),
+        std::tr1::make_tuple(44100, 44100, 0.00000048),
 
         // Upsampling.
-        std::tr1::make_tuple(44100, 48000, 0.0329405),
+        std::tr1::make_tuple(44100, 48000, 0.033),
 
         // Downsampling.
-        std::tr1::make_tuple(48000, 41000, 0.0410239)));
+        std::tr1::make_tuple(48000, 41000, 0.042)));
 
 }  // namespace media