Fixing loopback video test by reconfiguring the encoder to correct size.

webrtc/video/video_quality_test.cc

Index: webrtc/video/video_quality_test.cc
diff --git a/webrtc/video/video_quality_test.cc b/webrtc/video/video_quality_test.cc
index ce40c5fbb32dbca7d330a6d2b034decb265aa3e0..479ec7c572e5affdb636848715c9fb4381af4c02 100644
--- a/webrtc/video/video_quality_test.cc
+++ b/webrtc/video/video_quality_test.cc
@@ -103,7 +103,11 @@ class VideoStreamFactory
       int width,
       int height,
       const webrtc::VideoEncoderConfig& encoder_config) override {
-    return streams_;
+    // The highest layer must match the incoming resolution.
+    std::vector<webrtc::VideoStream> streams = streams_;
+    streams[streams_.size() - 1].height = height;
+    streams[streams_.size() - 1].width = width;
+    return streams;
   }
 
   std::vector<webrtc::VideoStream> streams_;