Introduce the nested namespace ::blink::cssvalue, start with CSSColorValue.

third_party/WebKit/Source/core/dom/TextLinkColors.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 19 matching lines @@
 #include "core/dom/TextLinkColors.h"
 
 #include "core/css/CSSColorValue.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/StyleColor.h"
 #include "core/layout/LayoutTheme.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
+using namespace cssvalue;
+
 TextLinkColors::TextLinkColors() : m_textColor(Color::black) {
   resetLinkColor();
   resetVisitedLinkColor();
   resetActiveLinkColor();
 }
 
 void TextLinkColors::resetLinkColor() {
   m_linkColor = Color(0, 0, 238);
 }
 
@@ skipping 25 matching lines @@
     case CSSValueWebkitFocusRingColor:
       return LayoutTheme::theme().focusRingColor();
     case CSSValueCurrentcolor:
       return currentColor;
     default:
       return StyleColor::colorFromKeyword(valueID);
   }
 }
 
 }  // namespace blink