Convert USE_PROPRIETARY_CODECS to a buildflag header.

media/test/pipeline_integration_perftest.cc

Index: media/test/pipeline_integration_perftest.cc
diff --git a/media/test/pipeline_integration_perftest.cc b/media/test/pipeline_integration_perftest.cc
index a1023ace2465d11c6087100aa929cf69a93e48bd..8d7d1bd02b7fd0cd33ac86dbe3c9932643324899 100644
--- a/media/test/pipeline_integration_perftest.cc
+++ b/media/test/pipeline_integration_perftest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "media/base/test_data_util.h"
+#include "media/media_features.h"
 #include "media/test/pipeline_integration_test_base.h"
 #include "testing/perf/perf_test.h"
 
@@ -62,7 +63,7 @@ TEST(PipelineIntegrationPerfTest, AudioPlaybackBenchmark) {
   RunAudioPlaybackBenchmark("sfx_s24le.wav", "clockless_playback");
   RunAudioPlaybackBenchmark("sfx_s16le.wav", "clockless_playback");
   RunAudioPlaybackBenchmark("sfx_u8.wav", "clockless_playback");
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
   RunAudioPlaybackBenchmark("sfx.mp3", "clockless_playback");
 #endif
 }
@@ -84,7 +85,7 @@ TEST(PipelineIntegrationPerfTest, TheoraPlaybackBenchmark) {
 #endif
 
 // PipelineIntegrationTests can't play h264 content.
-#if defined(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
 TEST(PipelineIntegrationPerfTest, MP4PlaybackBenchmark) {
   RunVideoPlaybackBenchmark("bear_silent.mp4", "clockless_video_playback_mp4");
 }