Resize MediaDocument playback to fit window size.

Source/WebCore/css/mediaControlsChromium.css

Index: Source/WebCore/css/mediaControlsChromium.css
diff --git a/Source/WebCore/css/mediaControlsChromium.css b/Source/WebCore/css/mediaControlsChromium.css
index 1aea87e80a9fbcbdb1f26bad7651cda8a251eadc..c0c33c369ec87f86b0213ebaa5ffe624d29f85eb 100644
--- a/Source/WebCore/css/mediaControlsChromium.css
+++ b/Source/WebCore/css/mediaControlsChromium.css
@@ -30,6 +30,11 @@ audio {
     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;