bindings: Adds check for attributes on prototype chains in CSSStyleDeclaration.

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

Index: Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp b/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
index b43dace9a5bbdcf09199b2a4d0ea04b6f89552b9..b4e27eebe974ee532771791efd43d3ff85244169 100644
--- a/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
+++ b/Source/bindings/core/v8/custom/V8CSSStyleDeclarationCustom.cpp
@@ -197,12 +197,6 @@ void V8CSSStyleDeclaration::namedPropertyQueryCustom(v8::Local<v8::Name> v8Name,
 
 void V8CSSStyleDeclaration::namedPropertyGetterCustom(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    if (!name->IsString())
-        return;
-    // First look for API defined attributes on the style declaration object.
-    if (v8CallBoolean(info.Holder()->HasRealNamedCallbackProperty(info.GetIsolate()->GetCurrentContext(), name.As<v8::String>())))
-        return;
-
     // Search the style declaration.
     CSSPropertyInfo* propInfo = cssPropertyInfo(name.As<v8::String>(), info.GetIsolate());