Dont elide the change if there are outstanding pbufs

Bug: 1109397
Change-Id: I3dbc859a10632cf2448c4f6f3bd28db6b708e8cf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2631468Reviewed-by: Frank Liberato <liberato@chromium.org>
Commit-Queue: Ted Meyer <tmathmeyer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843909}

media/gpu/windows/d3d11_video_decoder.cc

@@ -624,7 +624,7 @@ void D3D11VideoDecoder::DoDecode() {
       const auto new_coded_size = accelerated_video_decoder_->GetPicSize();
       if (new_profile == config_.profile() &&
           new_coded_size == config_.coded_size() &&
-          new_bit_depth == bit_depth_) {
+          new_bit_depth == bit_depth_ && !picture_buffers_.size()) {
         continue;
       }