Convert USE_PROPRIETARY_CODECS to a buildflag header.

content/browser/media/media_source_browsertest.cc

Index: content/browser/media/media_source_browsertest.cc
diff --git a/content/browser/media/media_source_browsertest.cc b/content/browser/media/media_source_browsertest.cc
index 65d1cd1ed678ad31e8b9ceba35e889788245fb49..9423d9047bd4e696aac596e89f0d0f1ed7dd810c 100644
--- a/content/browser/media/media_source_browsertest.cc
+++ b/content/browser/media/media_source_browsertest.cc
@@ -7,12 +7,13 @@
 #include "content/browser/media/media_browsertest.h"
 #include "content/public/common/content_switches.h"
 #include "media/media_features.h"
+
 #if defined(OS_ANDROID)
 #include "base/android/build_info.h"
 #endif
 
 // Common media types.
-#if defined(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
 const char kAAC_ADTS_AudioOnly[] = "audio/aac";
 #endif
 const char kWebMAudioOnly[] = "audio/webm; codecs=\"vorbis\"";
@@ -22,7 +23,7 @@ const char kWebMOpusAudioOnly[] = "audio/webm; codecs=\"opus\"";
 const char kWebMVideoOnly[] = "video/webm; codecs=\"vp8\"";
 const char kWebMAudioVideo[] = "video/webm; codecs=\"vorbis, vp8\"";
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 #if BUILDFLAG(ENABLE_MSE_MPEG2TS_STREAM_PARSER)
 const char kMp2tAudioVideo[] = "video/mp2t; codecs=\"mp4a.40.2, avc1.42E01E\"";
 #endif
@@ -59,7 +60,7 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_VideoOnly_WebM) {
 // TODO(servolk): Android is supposed to support AAC in ADTS container with
 // 'audio/aac' mime type, but for some reason playback fails on trybots due to
 // some issue in OMX AAC decoder (crbug.com/528361)
-#if defined(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS) && !defined(OS_ANDROID)
 IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioOnly_AAC_ADTS) {
   TestSimplePlayback("sfx.adts", kAAC_ADTS_AudioOnly, kEnded);
 }
@@ -86,7 +87,7 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, ConfigChangeVideo) {
   RunMediaTestPage("mse_config_change.html", base::StringPairs(), kEnded, true);
 }
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 
 // TODO(chcunningham): Figure out why this is flaky on android. crbug/607841
 #if !defined(OS_ANDROID)
@@ -106,7 +107,7 @@ IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_Video_WEBM_Audio_MP4) {
 }
 #endif
 
-#if defined(USE_PROPRIETARY_CODECS)
+#if BUILDFLAG(USE_PROPRIETARY_CODECS)
 #if BUILDFLAG(ENABLE_MSE_MPEG2TS_STREAM_PARSER)
 IN_PROC_BROWSER_TEST_F(MediaSourceTest, Playback_AudioVideo_Mp2t) {
   TestSimplePlayback("bear-1280x720.ts", kMp2tAudioVideo, kEnded);