Resize MediaDocument playback to fit window size.

Source/WebCore/css/mediaControlsChromium.css

 /*
  * Copyright (C) 2009 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /* Chromium default media controls */
 
 audio {
     width: 300px;
     height: 32px;
 }
 
+audio:-webkit-full-page-media, video:-webkit-full-page-media {
+    max-height: 100%;
+    max-width: 100%;
+}
+
 audio::-webkit-media-controls-panel, video::-webkit-media-controls-panel {
     -webkit-user-select: none;
     position: absolute;
     overflow: visible;
     bottom: 0;
     width: 100%;
     height: 32px;
     z-index: 0;
     background-color: rgba(0, 0, 0, 0.6);
 }
@@ skipping 109 matching lines @@
     -webkit-appearance: media-volume-slider;
     display: inline;
     position: absolute;
 
     top: 10px;
     left: 12px;
 
     width: 10px;
     height: 80px;
 }