Remove CSS_REGIONS compile flag from Blink.

Source/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2510 matching lines @@
 }
 
 RenderRegion* Element::renderRegion() const
 {
     if (renderer() && renderer()->isRenderRegion())
         return toRenderRegion(renderer());
 
     return 0;
 }
 
-#if ENABLE(CSS_REGIONS)
-
 const AtomicString& Element::webkitRegionOverset() const
 {
     document()->updateLayoutIgnorePendingStylesheets();
 
     DEFINE_STATIC_LOCAL(AtomicString, undefinedState, ("undefined", AtomicString::ConstructFromLiteral));
     if (!document()->cssRegionsEnabled() || !renderRegion())
         return undefinedState;
 
     switch (renderRegion()->regionState()) {
     case RenderRegion::RegionFit: {
@@ skipping 23 matching lines @@
     Vector<RefPtr<Range> > rangeObjects;
     if (document()->cssRegionsEnabled() && renderer() && renderer()->isRenderRegion()) {
         RenderRegion* region = toRenderRegion(renderer());
         if (region->isValid())
             region->getRanges(rangeObjects);
     }
 
     return rangeObjects;
 }
 
-#endif
-
 #ifndef NDEBUG
 bool Element::fastAttributeLookupAllowed(const QualifiedName& name) const
 {
     if (name == HTMLNames::styleAttr)
         return false;
 
 #if ENABLE(SVG)
     if (isSVGElement())
         return !static_cast<const SVGElement*>(this)->isAnimatableAttribute(name);
 #endif
@@ skipping 525 matching lines @@
     return 0;
 }
 
 Attribute* UniqueElementData::attributeItem(unsigned index)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(index < length());
     return &m_attributeVector.at(index);
 }
 
 } // namespace WebCore