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

third_party/WebKit/Source/core/css/parser/CSSParser.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSParser_h
 #define CSSParser_h
 
 #include "core/CSSPropertyNames.h"
 #include "core/CoreExport.h"
 #include "core/css/CSSValue.h"
 #include "core/css/StylePropertySet.h"
-#include "core/css/parser/CSSParserMode.h"
+#include "core/css/parser/CSSParserContext.h"
 #include "platform/graphics/Color.h"
 #include <memory>
 
 namespace blink {
 
 class CSSParserObserver;
 class CSSParserTokenRange;
 class CSSSelectorList;
 class Element;
 class ImmutableStylePropertySet;
@@ skipping 77 matching lines @@
       MutableStylePropertySet*,
       CSSPropertyID unresolvedProperty,
       const String&,
       bool important,
       const CSSParserContext&);
 };
 
 }  // namespace blink
 
 #endif  // CSSParser_h