[WIP] Attempt to move everything cssom into a cssom namespace

third_party/WebKit/Source/core/css/cssom/CSSUnsupportedStyleValue.cpp

 // Copyright 2016 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.
 
 #include "core/css/cssom/CSSUnsupportedStyleValue.h"
 
 #include "core/CSSPropertyNames.h"
 #include "core/css/parser/CSSParser.h"
 
 namespace blink {
+namespace cssom {
 
 const CSSValue* CSSUnsupportedStyleValue::toCSSValue() const
 {
     NOTREACHED();
     return nullptr;
 }
 
 const CSSValue* CSSUnsupportedStyleValue::toCSSValueWithProperty(CSSPropertyID propertyID) const
 {
     return CSSParser::parseSingleValue(propertyID, m_cssText, strictCSSParserContext());
 }
 
+} // namespace cssom
 } // namespace blink
+