Get rid of background-clip:text and PaintBehaviorForceBlackText.

sky/engine/core/rendering/RenderView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 223 matching lines @@
 
 static inline bool rendererObscuresBackground(RenderBox* rootBox)
 {
     ASSERT(rootBox);
     RenderStyle* style = rootBox->style();
     if (style->opacity() != 1
         || style->hasFilter()
         || style->hasTransform())
         return false;
 
-    if (rootBox->style()->backgroundClip() == TextFillBox)
-        return false;
-
     return true;
 }
 
 void RenderView::paintBoxDecorationBackground(PaintInfo& paintInfo, const LayoutPoint&)
 {
     if (!view())
         return;
 
     bool shouldPaintBackground = true;
     Node* documentElement = document().documentElement();
@@ skipping 449 matching lines @@
     m_iframes.remove(iframe);
 }
 
 void RenderView::updateIFramesAfterLayout()
 {
     for (auto& iframe: m_iframes)
         iframe->updateWidgetBounds();
 }
 
 } // namespace blink