Make SVGLength wrap a CSSPrimitiveValue.

third_party/WebKit/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 58 matching lines @@
         Number,
         Percentage,
         Ems,
         Exs,
         Pixels,
         Centimeters,
         Millimeters,
         Inches,
         Points,
         Picas,
+        UserUnits, // The SVG term for unitless lengths
         Degrees,
         Radians,
         Gradians,
         Turns,
         Milliseconds,
         Seconds,
         Hertz,
         Kilohertz,
         ViewportWidth,
         ViewportHeight,
@@ skipping 71 matching lines @@
             || type() == UnitType::Ems
             || type() == UnitType::Exs
             || type() == UnitType::Rems
             || type() == UnitType::Chs;
     }
     bool isQuirkyEms() const { return type() == UnitType::QuirkyEms; }
     bool isViewportPercentageLength() const { return isViewportPercentageLength(type()); }
     static bool isViewportPercentageLength(UnitType type) { return type >= UnitType::ViewportWidth && type <= UnitType::ViewportMax; }
     static bool isLength(UnitType type)
     {
-        return (type >= UnitType::Ems && type <= UnitType::Picas) || type == UnitType::QuirkyEms || type == UnitType::Rems || type == UnitType::Chs || isViewportPercentageLength(type);
+        return (type >= UnitType::Ems && type <= UnitType::UserUnits) || type == UnitType::QuirkyEms || type == UnitType::Rems || type == UnitType::Chs || isViewportPercentageLength(type);
     }
     bool isLength() const { return isLength(typeWithCalcResolved()); }
     bool isNumber() const { return typeWithCalcResolved() == UnitType::Number || typeWithCalcResolved() == UnitType::Integer; }
     bool isPercentage() const { return typeWithCalcResolved() == UnitType::Percentage; }
     bool isPx() const { return typeWithCalcResolved() == UnitType::Pixels; }
     bool isTime() const { return type() == UnitType::Seconds || type() == UnitType::Milliseconds; }
     bool isCalculated() const { return type() == UnitType::Calc; }
     bool isCalculatedPercentageWithNumber() const { return typeWithCalcResolved() == UnitType::CalcPercentageWithNumber; }
     bool isCalculatedPercentageWithLength() const { return typeWithCalcResolved() == UnitType::CalcPercentageWithLength; }
     static bool isDotsPerInch(UnitType type) { return type == UnitType::DotsPerInch; }
@@ skipping 100 matching lines @@
 };
 
 using CSSLengthArray = CSSPrimitiveValue::CSSLengthArray;
 using CSSLengthTypeArray = CSSPrimitiveValue::CSSLengthTypeArray;
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSPrimitiveValue, isPrimitiveValue());
 
 } // namespace blink
 
 #endif // CSSPrimitiveValue_h