debugging for crbug.com/646539

third_party/WebKit/Source/core/style/CachedUAStyle.h

  /*
  * Copyright (C) 2013 Google, Inc.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 25 matching lines @@
 // applyMatchedProperties for later use during adjustComputedStyle.
 class CachedUAStyle {
     USING_FAST_MALLOC(CachedUAStyle);
     WTF_MAKE_NONCOPYABLE(CachedUAStyle);
 public:
     static std::unique_ptr<CachedUAStyle> create(const ComputedStyle* style)
     {
         return wrapUnique(new CachedUAStyle(style));
     }
 
-    BorderData border;
-    FillLayer backgroundLayers;
+    //BorderData border;
+    //FillLayer backgroundLayers;
     StyleColor backgroundColor;
 
 private:
     explicit CachedUAStyle(const ComputedStyle* style)
-        : border(style->border())
-        , backgroundLayers(style->backgroundLayers())
-        , backgroundColor(style->backgroundColor())
+        : //border(style->border())
+        //, backgroundLayers(style->backgroundLayers())
+         backgroundColor(style->backgroundColor())
     {
     }
 };
 
 
 
 } // namespace blink
 
 #endif // CachedUAStyle_h