Android: use demuxer configs for video output size.

media/base/android/video_decoder_job.cc

Index: media/base/android/video_decoder_job.cc
diff --git a/media/base/android/video_decoder_job.cc b/media/base/android/video_decoder_job.cc
index bfa0dc32a668c41db84321af69a728ec0ad2aef0..e69426db7752aab98af060756aface45494cb5cf 100644
--- a/media/base/android/video_decoder_job.cc
+++ b/media/base/android/video_decoder_job.cc
@@ -158,7 +158,11 @@ bool VideoDecoderJob::UpdateOutputFormat() {
     return false;
   int prev_output_width = output_width_;
   int prev_output_height = output_height_;
-  media_codec_bridge_->GetOutputFormat(&output_width_, &output_height_);
+  // See b/18224769. The values reported from MediaCodecBridge::GetOutputFormat
+  // correspond to the actual video frame size, but this is not necessarily the
+  // size that should be output.
+  output_width_ = config_width_;
+  output_height_ = config_height_;
   return (output_width_ != prev_output_width) ||
       (output_height_ != prev_output_height);
 }