Removed m_isQuirkValue and used CSSPrimitiveValue::QuirkyEms instead

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 90 matching lines @@
         Integer,
         Rems,
         Chs,
         Shape,
         Calc,
         CalcPercentageWithNumber,
         CalcPercentageWithLength,
         String,
         PropertyID,
         ValueID,
+
+        // This value is used to handle quirky margins in reflow roots (body, td, and th) like WinIE.
+        // The basic idea is that a stylesheet can use the value __qem (for quirky em) instead of em.
+        // When the quirky value is used, if you're in quirks mode, the margin will collapse away
+        // inside a table cell. This quirk is specified in the HTML spec but our impl is different.
+        // TODO: Remove this. crbug.com/443952
         QuirkyEms,
     };
 
     enum LengthUnitType {
         UnitTypePixels = 0,
         UnitTypePercentage,
         UnitTypeFontSize,
         UnitTypeFontXSize,
         UnitTypeRootFontSize,
         UnitTypeZeroCharacterWidth,
@@ skipping 32 matching lines @@
     bool isAngle() const
     {
         return type() == UnitType::Degrees
             || type() == UnitType::Radians
             || type() == UnitType::Gradians
             || type() == UnitType::Turns;
     }
     bool isCustomIdent() const { return type() == UnitType::CustomIdentifier; }
     bool isFontRelativeLength() const
     {
-        return type() == UnitType::Ems
+        return type() == UnitType::QuirkyEms
+            || 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::Rems || type == UnitType::Chs || isViewportPercentageLength(type);
+        return (type >= UnitType::Ems && type <= UnitType::Picas) || 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 isPropertyID() const { return type() == UnitType::PropertyID; }
     bool isPx() const { return typeWithCalcResolved() == UnitType::Pixels; }
     bool isRGBColor() const { return type() == UnitType::RGBColor; }
     bool isShape() const { return type() == UnitType::Shape; }
     bool isString() const { return type() == UnitType::String; }
     bool isTime() const { return type() == UnitType::Seconds || type() == UnitType::Milliseconds; }
@@ skipping 31 matching lines @@
     }
     static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> create(const Length& value, float zoom)
     {
         return adoptRefWillBeNoop(new CSSPrimitiveValue(value, zoom));
     }
     template<typename T> static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> create(T value)
     {
         return adoptRefWillBeNoop(new CSSPrimitiveValue(value));
     }
 
-    // This value is used to handle quirky margins in reflow roots (body, td, and th) like WinIE.
-    // The basic idea is that a stylesheet can use the value __qem (for quirky em) instead of em.
-    // When the quirky value is used, if you're in quirks mode, the margin will collapse away
-    // inside a table cell.
-    static PassRefPtrWillBeRawPtr<CSSPrimitiveValue> createAllowingMarginQuirk(double value, UnitType type)
-    {
-        CSSPrimitiveValue* quirkValue = new CSSPrimitiveValue(value, type);
-        quirkValue->m_isQuirkValue = true;
-        return adoptRefWillBeNoop(quirkValue);
-    }
-
     ~CSSPrimitiveValue();
 
     void cleanup();
 
     UnitType typeWithCalcResolved() const;
 
     double computeDegrees() const;
     double computeSeconds() const;
 
     // Computes a length in pixels, resolving relative lengths
@@ skipping 14 matching lines @@
     CSSCalcValue* cssCalcValue() const { ASSERT(isCalculated()); return m_value.calc; }
     CSSPropertyID getPropertyID() const { ASSERT(isPropertyID()); return m_value.propertyID; }
 
     CSSValueID getValueID() const { return type() == UnitType::ValueID ? m_value.valueID : CSSValueInvalid; }
 
     template<typename T> inline operator T() const; // Defined in CSSPrimitiveValueMappings.h
 
     static const char* unitTypeToString(UnitType);
     String customCSSText() const;
 
-    bool isQuirkValue() const { return m_isQuirkValue; }
-
     bool equals(const CSSPrimitiveValue&) const;
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
     static UnitType canonicalUnitTypeForCategory(UnitCategory);
     static double conversionToCanonicalUnitsScaleFactor(UnitType);
 
     // Returns true and populates lengthUnitType, if unitType is a length unit. Otherwise, returns false.
     static bool unitTypeToLengthUnitType(UnitType, LengthUnitType&);
     static UnitType lengthUnitTypeToUnitType(LengthUnitType);
@@ skipping 45 matching lines @@
 };
 
 typedef CSSPrimitiveValue::CSSLengthArray CSSLengthArray;
 typedef CSSPrimitiveValue::CSSLengthTypeArray CSSLengthTypeArray;
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSPrimitiveValue, isPrimitiveValue());
 
 } // namespace blink
 
 #endif // CSSPrimitiveValue_h