Fix fullscreen elements in pinch viewport mode.

Source/web/FullscreenController.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 140 matching lines @@
 
 void FullscreenController::exitFullScreenForElement(Element* element)
 {
     // The client is exiting full screen, so don't send a notification.
     if (m_isCancelingFullScreen)
         return;
     if (WebViewClient* client = m_webViewImpl->client())
         client->exitFullScreen();
 }
 
+void FullscreenController::updateSize()
+{
+    if (!isFullscreen())
+        return;
+
+    Fullscreen::from(*m_fullScreenFrame->document()).fullScreenRenderer()->updateStyle();
+}
+
 void FullscreenController::trace(Visitor* visitor)
 {
     visitor->trace(m_provisionalFullScreenElement);
     visitor->trace(m_fullScreenFrame);
 }
 
 } // namespace blink