Reland r101418: Fix aspect ratio and clarify video frame dimensions

media/tools/player_x11/gl_video_renderer.cc

Index: media/tools/player_x11/gl_video_renderer.cc
diff --git a/media/tools/player_x11/gl_video_renderer.cc b/media/tools/player_x11/gl_video_renderer.cc
index b58b4df5a46d721ea5857b7ff0a440ab4292ece6..6c6cda4ff5568af0b9a6df9ded95461532c826e0 100644
--- a/media/tools/player_x11/gl_video_renderer.cc
+++ b/media/tools/player_x11/gl_video_renderer.cc
@@ -128,7 +128,8 @@ bool GlVideoRenderer::OnInitialize(media::VideoDecoder* decoder) {
   LOG(INFO) << "Initializing GL Renderer...";
 
   // Resize the window to fit that of the video.
-  XResizeWindow(display_, window_, decoder->width(), decoder->height());
+  XResizeWindow(display_, window_, decoder->natural_size().width(),
+                decoder->natural_size().height());
 
   gl_context_ = InitGLContext(display_, window_);
   if (!gl_context_)