Remove enclosingIntRect(const IntRect&) and adjust all call sites.

Source/core/platform/graphics/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 176 matching lines @@
 inline bool operator==(const IntRect& a, const IntRect& b)
 {
     return a.location() == b.location() && a.size() == b.size();
 }
 
 inline bool operator!=(const IntRect& a, const IntRect& b)
 {
     return a.location() != b.location() || a.size() != b.size();
 }
 
-// FIXME: This method is here only to ease the transition to sub-pixel layout. It should
-// be removed when we close http://webkit.org/b/60318
-inline IntRect enclosingIntRect(const IntRect& rect)
-{
-    return rect;
-}
-
 #if OS(DARWIN)
 IntRect enclosingIntRect(const CGRect&);
 #if !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
 IntRect enclosingIntRect(const NSRect&);
 #endif
 #endif
 
 } // namespace WebCore
 
 #endif // IntRect_h