Remove PlatformWidget references

Source/WebCore/rendering/RenderWidget.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 245 matching lines @@
         paintInfo.context->translate(widgetPaintOffset);
         paintRect.move(-widgetPaintOffset);
     }
     m_widget->paint(paintInfo.context, paintRect);
 
     if (!widgetPaintOffset.isZero())
         paintInfo.context->translate(-widgetPaintOffset);
 
     if (m_widget->isFrameView()) {
         FrameView* frameView = toFrameView(m_widget.get());
-        bool runOverlapTests = !frameView->useSlowRepaintsIfNotOverlapped() || frameView->hasCompositedContentIncludingDescendants();
+        bool runOverlapTests = !frameView->useSlowRepaintsIfNotOverlapped() || frameView->hasCompositedContent();
         if (paintInfo.overlapTestRequests && runOverlapTests) {
             ASSERT(!paintInfo.overlapTestRequests->contains(this));
             paintInfo.overlapTestRequests->set(this, m_widget->frameRect());
         }
     }
 }
 
 void RenderWidget::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (!shouldPaint(paintInfo, paintOffset))
@@ skipping 127 matching lines @@
 CursorDirective RenderWidget::getCursor(const LayoutPoint& point, Cursor& cursor) const
 {
     if (widget() && widget()->isPluginViewBase()) {
         // A plug-in is responsible for setting the cursor when the pointer is over it.
         return DoNotSetCursor;
     }
     return RenderReplaced::getCursor(point, cursor);
 }
 
 } // namespace WebCore