Handle odd width and height in the MediaSource renderer.

Chrome requires video streams to have even width and height, so
MediaSource renderer didn't work properly for streams with odd width or
height. Fixed it to round up dimensions and crop one column or one row
when screen size is odd, using Matroska's CropRight and CropBottom
attributes.

BUG=321825

Review URL: https://codereview.chromium.org/291193008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272430 0039d316-1c4b-4281-b951-d872f2087c98

remoting/client/plugin/media_source_video_renderer.cc

@@ -65,9 +65,25 @@ MediaSourceVideoRenderer::VideoWriter::VideoWriter(
           .InMicroseconds() *
       base::Time::kNanosecondsPerMicrosecond);
 
-  segment_->AddVideoTrack(frame_size_.width(), frame_size_.height(), 1);
+  uint64 crop_right = 0;
+  int width = frame_size_.width();
+  if (width % 2 == 1) {
+    ++width;
+    crop_right = 1;
+  }
+
+  uint64 crop_bottom = 0;
+  int height = frame_size_.height();
+  if (height % 2 == 1) {
+    ++height;
+    crop_bottom = 1;
+  }
+
+  segment_->AddVideoTrack(width, height, 1);
   mkvmuxer::VideoTrack* video_track =
       reinterpret_cast<mkvmuxer::VideoTrack*>(segment_->GetTrackByNumber(1));
+  video_track->set_crop_right(crop_right);
+  video_track->set_crop_bottom(crop_bottom);
   video_track->set_frame_rate(base::Time::kNanosecondsPerSecond /
                               kFrameIntervalNs);
   video_track->set_default_duration(base::Time::kNanosecondsPerSecond);