[bindings] Remove custom setter used in CSSStyleDeclaration

Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp

 /*
  * Copyright (C) 2007-2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 192 matching lines @@
     RefPtrWillBeRawPtr<CSSValue> cssValue = impl->getPropertyCSSValueInternal(resolvedProperty);
     if (cssValue) {
         v8SetReturnValueStringOrNull(info, cssValue->cssText(), info.GetIsolate());
         return;
     }
 
     String result = impl->getPropertyValueInternal(resolvedProperty);
     v8SetReturnValueString(info, result, info.GetIsolate());
 }
 
-void V8CSSStyleDeclaration::namedPropertySetterCustom(v8::Local<v8::Name> name, v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<v8::Value>& info)
-{
-    if (!name->IsString())
-        return;
-    CSSStyleDeclaration* impl = V8CSSStyleDeclaration::toImpl(info.Holder());
-    CSSPropertyID unresolvedProperty = cssPropertyInfo(name.As<v8::String>(), info.GetIsolate());
-    if (!unresolvedProperty)
-        return;
-
-    TOSTRING_VOID(V8StringResource<TreatNullAsNullString>, propertyValue, value);
-    ExceptionState exceptionState(ExceptionState::SetterContext, getPropertyName(resolveCSSPropertyID(unresolvedProperty)), "CSSStyleDeclaration", info.Holder(), info.GetIsolate());
-    impl->setPropertyInternal(unresolvedProperty, propertyValue, false, exceptionState);
-
-    if (exceptionState.throwIfNeeded())
-        return;
-
-    v8SetReturnValue(info, value);
-}
-
 } // namespace blink