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 cb806c74812aba84ee66885a36f746f161ad0129..6b77416fe0a91b3ba64e496dbd72b77c3538ec06 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -407,8 +407,17 @@ void AVStreamToVideoDecoderConfig(
   }
 
   VideoFrame::Format format = PixelFormatToVideoFormat(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 == VideoFrame::UNKNOWN)
+    format = VideoFrame::YV12;
+  if (coded_size == gfx::Size(0, 0))
+    coded_size = visible_rect.size();
+#endif
+
+  // TODO(tomfinegan): libavcodec doesn't know about VP9.
   if (codec == kCodecVP9) {
-    // TODO(tomfinegan): libavcodec doesn't know about VP9.
     format = VideoFrame::YV12;
     coded_size = visible_rect.size();
   }