Convert USE_PROPRIETARY_CODECS to a buildflag header.

media/filters/audio_decoder_unittest.cc

Index: media/filters/audio_decoder_unittest.cc
diff --git a/media/filters/audio_decoder_unittest.cc b/media/filters/audio_decoder_unittest.cc
index 12c86e35280830048ede16ea49643893e610bf70..875424e3744798035275f1b439e88c67b878e551 100644
--- a/media/filters/audio_decoder_unittest.cc
+++ b/media/filters/audio_decoder_unittest.cc
@@ -29,6 +29,7 @@
 #include "media/filters/audio_file_reader.h"
 #include "media/filters/ffmpeg_audio_decoder.h"
 #include "media/filters/in_memory_url_protocol.h"
+#include "media/media_features.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(OS_ANDROID)
@@ -36,7 +37,7 @@
 #include "media/base/android/media_codec_util.h"
 #include "media/filters/android/media_codec_audio_decoder.h"
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 #include "media/formats/mpeg/adts_stream_parser.h"
 #endif
 
@@ -187,7 +188,7 @@ class AudioDecoderTest : public testing::TestWithParam<DecoderTestData> {
     ASSERT_TRUE(AVCodecContextToAudioDecoderConfig(
         reader_->codec_context_for_testing(), Unencrypted(), &config));
 
-#if defined(OS_ANDROID) && defined(USE_PROPRIETARY_CODECS)
+#if defined(OS_ANDROID) && BUILDFLAG(USE_PROPRIETARY_CODECS)
     // MEDIA_CODEC type requires config->extra_data() for AAC codec. For ADTS
     // streams we need to extract it with a separate procedure.
     if (GetParam().decoder_type == MEDIA_CODEC &&
@@ -456,7 +457,7 @@ const DecodedBufferExpectations kBearOpusExpectations[] = {
 };
 
 #if defined(OS_ANDROID)
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 const DecodedBufferExpectations kSfxAdtsMcExpectations[] = {
     {0, 23219, "-1.80,-1.49,-0.23,1.11,1.54,-0.11,"},
     {23219, 23219, "-1.90,-1.53,-0.15,1.28,1.23,-0.33,"},
@@ -473,7 +474,7 @@ const DecodedBufferExpectations kHeAacMcExpectations[] = {
 const DecoderTestData kMediaCodecTests[] = {
     {MEDIA_CODEC, kCodecOpus, "bear-opus.ogg", kBearOpusExpectations, 24, 48000,
      CHANNEL_LAYOUT_STEREO},
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
     {MEDIA_CODEC, kCodecAAC, "sfx.adts", kSfxAdtsMcExpectations, 0, 44100,
      CHANNEL_LAYOUT_MONO},
     {MEDIA_CODEC, kCodecAAC, "bear-audio-implicit-he-aac-v2.aac",
@@ -486,7 +487,7 @@ INSTANTIATE_TEST_CASE_P(MediaCodec,
                         testing::ValuesIn(kMediaCodecTests));
 #endif  // defined(OS_ANDROID)
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 const DecodedBufferExpectations kSfxMp3Expectations[] = {
     {0, 1065, "2.81,3.99,4.53,4.10,3.08,2.46,"},
     {1065, 26122, "-3.81,-4.14,-3.90,-3.36,-3.03,-3.23,"},
@@ -545,7 +546,7 @@ const DecodedBufferExpectations kSfxOpusExpectations[] = {
 #endif
 
 const DecoderTestData kFFmpegTests[] = {
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
     {FFMPEG, kCodecMP3, "sfx.mp3", kSfxMp3Expectations, 0, 44100,
      CHANNEL_LAYOUT_MONO},
     {FFMPEG, kCodecAAC, "sfx.adts", kSfxAdtsExpectations, 0, 44100,