Blink: Pass 'unobscured' rect to WebPlugins.

Source/web/WebPluginContainerImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. 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.
@@ skipping 169 matching lines @@
     void handleWheelEvent(WheelEvent*);
     void handleKeyboardEvent(KeyboardEvent*);
     void handleTouchEvent(TouchEvent*);
     void handleGestureEvent(GestureEvent*);
 
     void synthesizeMouseEventIfPossible(TouchEvent*);
 
     void focusPlugin();
 
     void calculateGeometry(
-        const IntRect& frameRect,
         IntRect& windowRect,
         IntRect& clipRect,
+        IntRect& unobscuredRect,
         Vector<IntRect>& cutOutRects);
-    IntRect windowClipRect() const;
     void windowCutOutRects(
         const IntRect& frameRect,
         Vector<IntRect>& cutOutRects);
 
     RawPtrWillBeMember<HTMLPlugInElement> m_element;
     WebPlugin* m_webPlugin;
     Vector<WebPluginLoadObserver*> m_pluginLoadObservers;
 
     WebLayer* m_webLayer;
 
@@ skipping 12 matching lines @@
 };
 
 DEFINE_TYPE_CASTS(WebPluginContainerImpl, Widget, widget, widget->isPluginContainer(), widget.isPluginContainer());
 // Unlike Widget, we need not worry about object type for container.
 // WebPluginContainerImpl is the only subclass of WebPluginContainer.
 DEFINE_TYPE_CASTS(WebPluginContainerImpl, WebPluginContainer, container, true, true);
 
 } // namespace blink
 
 #endif