Enable pcm_s32le audio decoding.

media/base/audio_buffer_unittest.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/base/audio_buffer.h"
 #include "media/base/audio_bus.h"
 #include "media/base/test_helpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
@@ skipping 445 matching lines @@
     case kSampleFormatS16:
     case kSampleFormatPlanarS16:
       return MakeAudioBuffer<int16>(sample_format,
                                     channel_layout,
                                     channel_count,
                                     sample_rate,
                                     0,
                                     1,
                                     frames,
                                     base::TimeDelta::FromSeconds(0));
+    case kSampleFormatS24:
     case kSampleFormatS32:
       return MakeAudioBuffer<int32>(kSampleFormatS32,
                                     channel_layout,
                                     channel_count,
                                     sample_rate,
                                     0,
                                     65536,
                                     frames,
                                     base::TimeDelta::FromSeconds(0));
     case kSampleFormatF32:
@@ skipping 103 matching lines @@
 
 TEST(AudioBufferTest, ReadFramesInterleavedS16FromPlanarS16) {
   ReadFramesInterleavedS16Test(kSampleFormatPlanarS16);
 }
 
 TEST(AudioBufferTest, ReadFramesInterleavedS16FromPlanarF32) {
   ReadFramesInterleavedS16Test(kSampleFormatPlanarF32);
 }
 
 }  // namespace media