remove memoryinstrumentation

Source/core/css/CSSGradientValue.h

Index: Source/core/css/CSSGradientValue.h
diff --git a/Source/core/css/CSSGradientValue.h b/Source/core/css/CSSGradientValue.h
index 8e1c77b64110d9967d3721b1cafc05f29f81152f..8a1178f7bb7141faae0d9172b25b31243f3a7466 100644
--- a/Source/core/css/CSSGradientValue.h
+++ b/Source/core/css/CSSGradientValue.h
@@ -52,7 +52,6 @@ struct CSSGradientColorStop {
     RefPtr<CSSPrimitiveValue> m_color;
     Color m_resolvedColor;
     bool m_colorIsDerivedFromElement;
-    void reportMemoryUsage(MemoryObjectInfo*) const;
     bool operator==(const CSSGradientColorStop& other) const
     {
         return compareCSSValuePtr(m_color, other.m_color)
@@ -120,8 +119,6 @@ protected:
 
     bool isCacheable() const;
 
-    void reportBaseClassMemoryUsage(MemoryObjectInfo*) const;
-
     // Points. Some of these may be null.
     RefPtr<CSSPrimitiveValue> m_firstX;
     RefPtr<CSSPrimitiveValue> m_firstY;
@@ -159,8 +156,6 @@ public:
 
     bool equals(const CSSLinearGradientValue&) const;
 
-    void reportDescendantMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     CSSLinearGradientValue(CSSGradientRepeat repeat, CSSGradientType gradientType = CSSLinearGradient)
         : CSSGradientValue(LinearGradientClass, repeat, gradientType)
@@ -204,8 +199,6 @@ public:
 
     bool equals(const CSSRadialGradientValue&) const;
 
-    void reportDescendantMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     CSSRadialGradientValue(CSSGradientRepeat repeat, CSSGradientType gradientType = CSSRadialGradient)
         : CSSGradientValue(RadialGradientClass, repeat, gradientType)