Split out Color from CSSPrimitiveValue

third_party/WebKit/Source/core/css/CSSGradientValue.cpp

 /*
  * Copyright (C) 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 174 matching lines @@
             newStops[y].color = blend(leftColor, rightColor, weighting);
         }
 
         // Replace the color hint with the new color stops.
         stops.remove(x);
         stops.insert(x, newStops, 9);
         indexOffset += 8;
     }
 }
 
-static Color resolveStopColor(const CSSPrimitiveValue& stopColor, const LayoutObject& object)
+static Color resolveStopColor(const CSSValue& stopColor, const LayoutObject& object)
 {
-    return object.document().textLinkColors().colorFromPrimitiveValue(stopColor, object.resolveColor(CSSPropertyColor));
+    return object.document().textLinkColors().colorFromCSSValue(stopColor, object.resolveColor(CSSPropertyColor));
 }
 
 void CSSGradientValue::addDeprecatedStops(Gradient* gradient, const LayoutObject& object)
 {
     ASSERT(m_gradientType == CSSDeprecatedLinearGradient || m_gradientType == CSSDeprecatedRadialGradient);
 
     if (!m_stopsSorted) {
         if (m_stops.size())
             std::stable_sort(m_stops.begin(), m_stops.end(), compareStops);
         m_stopsSorted = true;
@@ skipping 334 matching lines @@
         result.setY(positionFromValue(vertical, conversionData, size, false));
 
     return result;
 }
 
 bool CSSGradientValue::isCacheable() const
 {
     for (size_t i = 0; i < m_stops.size(); ++i) {
         const CSSGradientColorStop& stop = m_stops[i];
 
-        if (!stop.isHint() && stop.m_color->colorIsDerivedFromElement())
+        if (!stop.isHint() && stop.m_color->isPrimitiveValue() && toCSSPrimitiveValue(*stop.m_color).colorIsDerivedFromElement())
             return false;
 
         if (!stop.m_position)
             continue;
 
         if (stop.m_position->isFontRelativeLength())
             return false;
     }
 
     return true;
@@ skipping 644 matching lines @@
     visitor->trace(m_firstRadius);
     visitor->trace(m_secondRadius);
     visitor->trace(m_shape);
     visitor->trace(m_sizingBehavior);
     visitor->trace(m_endHorizontalSize);
     visitor->trace(m_endVerticalSize);
     CSSGradientValue::traceAfterDispatch(visitor);
 }
 
 } // namespace blink