Make VideoDecoder use (kAborted, NULL) to signify an aborted decode, instead of (kOk, NULL).

media/filters/ffmpeg_video_decoder.cc

Index: media/filters/ffmpeg_video_decoder.cc
diff --git a/media/filters/ffmpeg_video_decoder.cc b/media/filters/ffmpeg_video_decoder.cc
index fe0d75fa6f15bc6363b27cb81f654c819616ecb3..38e59ea674a7ce1bb6751bc81b980c022d8aa706 100644
--- a/media/filters/ffmpeg_video_decoder.cc
+++ b/media/filters/ffmpeg_video_decoder.cc
@@ -199,7 +199,7 @@ void FFmpegVideoDecoder::Stop(const base::Closure& closure) {
     return;
 
   if (!decode_cb_.is_null()) {
-    base::ResetAndReturn(&decode_cb_).Run(kOk, NULL);
+    base::ResetAndReturn(&decode_cb_).Run(kAborted, NULL);
     // Reset is pending only when decode is pending.
     if (!reset_cb_.is_null())
       base::ResetAndReturn(&reset_cb_).Run();