Remove the CSSOM.

sky/engine/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 28 matching lines @@
 #include "sky/engine/core/css/CSSCrossfadeValue.h"
 #include "sky/engine/core/css/CSSCursorImageValue.h"
 #include "sky/engine/core/css/CSSFontFaceSrcValue.h"
 #include "sky/engine/core/css/CSSFontFeatureValue.h"
 #include "sky/engine/core/css/CSSFunctionValue.h"
 #include "sky/engine/core/css/CSSGradientValue.h"
 #include "sky/engine/core/css/CSSImageSetValue.h"
 #include "sky/engine/core/css/CSSImageValue.h"
 #include "sky/engine/core/css/CSSInheritedValue.h"
 #include "sky/engine/core/css/CSSInitialValue.h"
-#include "sky/engine/core/css/CSSKeyframeRule.h"
-#include "sky/engine/core/css/CSSKeyframesRule.h"
 #include "sky/engine/core/css/CSSLineBoxContainValue.h"
 #include "sky/engine/core/css/CSSPrimitiveValue.h"
 #include "sky/engine/core/css/CSSPropertyMetadata.h"
 #include "sky/engine/core/css/CSSPropertySourceData.h"
 #include "sky/engine/core/css/CSSSelector.h"
 #include "sky/engine/core/css/CSSShadowValue.h"
 #include "sky/engine/core/css/CSSTimingFunctionValue.h"
 #include "sky/engine/core/css/CSSTransformValue.h"
 #include "sky/engine/core/css/CSSUnicodeRangeValue.h"
 #include "sky/engine/core/css/CSSValueList.h"
@@ skipping 6137 matching lines @@
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 bool CSSPropertyParser::isSystemColor(int id)
 {
     // FIXME(sky): remove
     return false;
 }
 
 } // namespace blink