[bindings] Support passing of ScriptState for namedPropertyQuery form of getter.

Source/core/css/CSSStyleDeclaration.idl

Index: Source/core/css/CSSStyleDeclaration.idl
diff --git a/Source/core/css/CSSStyleDeclaration.idl b/Source/core/css/CSSStyleDeclaration.idl
index 24fdfbb82bdee6a9d0905e8efd42c79a46506aac..ffc173ad38e6dd6a0415045c1ece47a617755a8c 100644
--- a/Source/core/css/CSSStyleDeclaration.idl
+++ b/Source/core/css/CSSStyleDeclaration.idl
@@ -44,6 +44,6 @@
     // The camel-cased and dashed attribute getters have custom bindings.
     // http://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-camel-cased-attribute
     // http://dev.w3.org/csswg/cssom/#dom-cssstyledeclaration-dashed-attribute
-    [Custom=(PropertyGetter,PropertyEnumerator,PropertyQuery)] getter (DOMString or float) (DOMString name);

[haraken, 2015/04/29 15:53:46]

Can we drop these Custom=X from run-bindings-tests and
IDLExtendedAttributes.txt?

-    [Custom] setter void (DOMString property, DOMString? propertyValue);
+    [CallWith=ScriptState] getter (DOMString or float) (DOMString name);
+    [RaisesException, CallWith=ScriptState] setter void (DOMString property, DOMString? propertyValue);
 };