Convert USE_PROPRIETARY_CODECS to a buildflag header.

media/filters/audio_file_reader_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.
 
 #include "media/filters/audio_file_reader.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/md5.h"
 #include "build/build_config.h"
 #include "media/base/audio_bus.h"
 #include "media/base/audio_hash.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/test_data_util.h"
 #include "media/ffmpeg/ffmpeg_common.h"
 #include "media/filters/in_memory_url_protocol.h"
+#include "media/media_features.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
 
 class AudioFileReaderTest : public testing::Test {
  public:
   AudioFileReaderTest() : packet_verification_disabled_(false) {}
   ~AudioFileReaderTest() override {}
 
   void Initialize(const char* filename) {
@@ skipping 163 matching lines @@
 TEST_F(AudioFileReaderTest, WaveF32LE) {
   RunTest("sfx_f32le.wav",
           "3.03,2.86,2.99,3.31,3.57,4.06,",
           1,
           44100,
           base::TimeDelta::FromMicroseconds(288414),
           12720,
           12719);
 }
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 TEST_F(AudioFileReaderTest, MP3) {
   RunTest("sfx.mp3",
           "1.30,2.72,4.56,5.08,3.74,2.03,",
           1,
           44100,
           base::TimeDelta::FromMicroseconds(313470),
           13825,
           11025);
 }
 
@@ skipping 28 matching lines @@
   RunTest("4ch.wav",
           "131.71,38.02,130.31,44.89,135.98,42.52,",
           4,
           44100,
           base::TimeDelta::FromMicroseconds(100001),
           4411,
           4410);
 }
 
 }  // namespace media