fix builds with vpx and/or ffmpeg disabled

media/mojo/services/renderer_config_default.cc

Index: media/mojo/services/renderer_config_default.cc
diff --git a/media/mojo/services/renderer_config_default.cc b/media/mojo/services/renderer_config_default.cc
index 76da6db577025bdca91734d0e72c312438fd4d0b..66464a9a61ee6ad199ff1fc8c2107ac77af1c5bd 100644
--- a/media/mojo/services/renderer_config_default.cc
+++ b/media/mojo/services/renderer_config_default.cc
@@ -12,7 +12,7 @@
 #include "media/base/media.h"
 #include "media/filters/opus_audio_decoder.h"
 
-#if !defined(OS_ANDROID)
+#if !defined(MEDIA_DISABLE_FFMPEG)
 #include "media/filters/ffmpeg_audio_decoder.h"
 #include "media/filters/ffmpeg_video_decoder.h"
 #endif
@@ -55,7 +55,7 @@ class DefaultRendererConfig : public PlatformRendererConfig {
       const LogCB& media_log_cb) override {
     ScopedVector<AudioDecoder> audio_decoders;
 
-#if !defined(OS_ANDROID)
+#if !defined(MEDIA_DISABLE_FFMPEG)
     audio_decoders.push_back(
         new FFmpegAudioDecoder(media_task_runner, media_log_cb));
     audio_decoders.push_back(new OpusAudioDecoder(media_task_runner));
@@ -74,9 +74,9 @@ class DefaultRendererConfig : public PlatformRendererConfig {
 
 #if !defined(MEDIA_DISABLE_LIBVPX)
     video_decoders.push_back(new VpxVideoDecoder(media_task_runner));
-#endif  // !defined(MEDIA_DISABLE_LIBVPX)
+#endif
 
-#if !defined(OS_ANDROID)
+#if !defined(MEDIA_DISABLE_FFMPEG)
     video_decoders.push_back(new FFmpegVideoDecoder(media_task_runner));
 #endif