Initial support for the desktop media pipeline on Android.

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index cfd9e9aabdcb75ba0842b2867a24d52fed54334d..5b6ef7fe3c19c3df7b31ffb194240198bc3e6f81 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -408,6 +408,15 @@ void AVStreamToVideoDecoderConfig(
 
   VideoPixelFormat format =
       PixelFormatToVideoPixelFormat(stream->codec->pix_fmt);
+  // The format and coded size may be unknown if FFmpeg is compiled without
+  // video decoders.
+#if defined(DISABLE_FFMPEG_VIDEO_DECODERS)
+  if (format == PIXEL_FORMAT_UNKNOWN)
+    format = PIXEL_FORMAT_YV12;
+  if (coded_size == gfx::Size(0, 0))
+    coded_size = visible_rect.size();
+#endif
+
   if (codec == kCodecVP9) {
     // TODO(tomfinegan): libavcodec doesn't know about VP9.
     format = PIXEL_FORMAT_YV12;