Android: enable H264&VP8 HW accelerator for MediaRecorder

content/renderer/media_recorder/video_track_recorder_unittest.cc

Index: content/renderer/media_recorder/video_track_recorder_unittest.cc
diff --git a/content/renderer/media_recorder/video_track_recorder_unittest.cc b/content/renderer/media_recorder/video_track_recorder_unittest.cc
index 05cd924b4a3b01cbb16a16e35eebf5ad51338658..8cefcf4bf07c8b22f32a9991347615751d62192b 100644
--- a/content/renderer/media_recorder/video_track_recorder_unittest.cc
+++ b/content/renderer/media_recorder/video_track_recorder_unittest.cc
@@ -47,6 +47,8 @@ const VideoTrackRecorder::CodecId kTrackRecorderTestCodec[] = {
     VideoTrackRecorder::CodecId::VP8,
     VideoTrackRecorder::CodecId::VP9
 #if BUILDFLAG(RTC_USE_H264)
+    // This test case can't be enabled in Android because there is no software
+    // OpenH264 fallback nor render thread to enumerate the hardware encoders.
     , VideoTrackRecorder::CodecId::H264
 #endif
 };