Experiment: Switch to code-driven conversion of CSS unit type names.

Source/core/css/CSSPrimitiveValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 138 matching lines @@
         ULength,
         UAngle,
         UTime,
         UFrequency,
         UResolution,
         UOther
     };
     static UnitCategory unitCategory(UnitType);
     static float clampToCSSLengthRange(double);
 
-    static void initUnitTable();
-
-    static UnitType fromName(const String& unit);
+    static UnitType fromName(const UChar* unit, unsigned length);
+    static UnitType fromName(const LChar* unit, unsigned length);
 
     bool isAngle() const
     {
         return type() == UnitType::Degrees
             || type() == UnitType::Radians
             || type() == UnitType::Gradians
             || type() == UnitType::Turns;
     }
     bool isAttr() const { return type() == UnitType::Attribute; }
     bool isCounter() const { return type() == UnitType::Counter; }
@@ skipping 189 matching lines @@
 };
 
 typedef CSSPrimitiveValue::CSSLengthArray CSSLengthArray;
 typedef CSSPrimitiveValue::CSSLengthTypeArray CSSLengthTypeArray;
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSPrimitiveValue, isPrimitiveValue());
 
 } // namespace blink
 
 #endif // CSSPrimitiveValue_h