Split the CSSParserContext class out of CSSParserMode into its own file.

third_party/WebKit/Source/core/css/StylePropertySet.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
  * All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. 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
@@ skipping 12 matching lines @@
 
 #include "core/css/StylePropertySet.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/css/CSSCustomPropertyDeclaration.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/CSSPropertyMetadata.h"
 #include "core/css/StylePropertySerializer.h"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/parser/CSSParser.h"
+#include "core/css/parser/CSSParserContext.h"
 #include "core/frame/UseCounter.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "wtf/text/StringBuilder.h"
 
 #ifndef NDEBUG
 #include "wtf/text/CString.h"
 #include <stdio.h>
 #endif
 
 namespace blink {
@@ skipping 565 matching lines @@
 
 MutableStylePropertySet* MutableStylePropertySet::create(
     const CSSProperty* properties,
     unsigned count) {
   return new MutableStylePropertySet(properties, count);
 }
 
 DEFINE_TRACE(CSSLazyPropertyParser) {}
 
 }  // namespace blink