Media Controls: don't try to cut the controls when the element is fullscreen.

third_party/WebKit/Source/core/layout/LayoutMedia.cpp

Index: third_party/WebKit/Source/core/layout/LayoutMedia.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutMedia.cpp b/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
index e85413688c4df85a8552f5c983d458e03b198e69..9cd13a60e23474c816df8c7bf9342d24f0d312fb 100644
--- a/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutMedia.cpp
@@ -164,6 +164,12 @@ LayoutUnit LayoutMedia::computePanelWidth(const LayoutRect& mediaRect) const {
   if (document().page()->mainFrame()->isRemoteFrame())
     return mediaRect.width();
 
+  // TODO(foolip): when going fullscreen, the animation sometimes does not clear
+  // up properly and the last `absoluteXOffset` received is incorrect. This is
+  // a shortcut that we could ideally avoid. See https://crbug.com/663680
+  if (mediaElement() && mediaElement()->isFullscreen())
+    return mediaRect.width();
+
   FrameHost* frameHost = document().frameHost();
   LocalFrame* mainFrame = document().page()->deprecatedLocalMainFrame();
   FrameView* pageView = mainFrame ? mainFrame->view() : nullptr;