iPhone 5c marketing site repaints incorrectly with layer squashing

Source/platform/geometry/IntRect.h

 /*
  * Copyright (C) 2003, 2006, 2009 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 144 matching lines @@
 #if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
     operator NSRect() const;
 #endif
 #endif
 
     operator SkRect() const;
     operator SkIRect() const;
 
 #ifndef NDEBUG
     // Prints the rect to the screen.
-    void show();
+    void show() const;
 #endif
 
 private:
     IntPoint m_location;
     IntSize m_size;
 };
 
 inline IntRect intersection(const IntRect& a, const IntRect& b)
 {
     IntRect c = a;
@@ skipping 23 matching lines @@
 #if OS(MACOSX)
 PLATFORM_EXPORT IntRect enclosingIntRect(const CGRect&);
 #if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
 PLATFORM_EXPORT IntRect enclosingIntRect(const NSRect&);
 #endif
 #endif
 
 } // namespace WebCore
 
 #endif // IntRect_h