Support indexed setter generation

Source/core/css/CSSStyleDeclaration.cpp

Index: Source/core/css/CSSStyleDeclaration.cpp
diff --git a/Source/core/css/CSSStyleDeclaration.cpp b/Source/core/css/CSSStyleDeclaration.cpp
index de3064306a8a857dcc8d133d987fd0f7fe48f414..1d7e3126b368ecfa3bce83f56196e716eec019d6 100644
--- a/Source/core/css/CSSStyleDeclaration.cpp
+++ b/Source/core/css/CSSStyleDeclaration.cpp
@@ -165,7 +165,7 @@ void CSSStyleDeclaration::anonymousNamedGetter(const AtomicString& name, bool& r
     returnValue1Enabled = true;
 }
 
-bool CSSStyleDeclaration::anonymousNamedSetter(const AtomicString& propertyName, const String& value, ExceptionCode& ec)
+bool CSSStyleDeclaration::anonymousNamedSetter(const AtomicString& propertyName, const String& value, bool isValueNull, bool isValueUndefined, ExceptionCode& ec)
 {
     String propertyValue = value;
     CSSPropertyInfo* propInfo = CSSStyleDeclaration::cssPropertyInfo(propertyName);