IDL: Add support for [Unscopeable] on attributes and methods

Source/bindings/tests/results/core/V8DataView.cpp

Index: Source/bindings/tests/results/core/V8DataView.cpp
diff --git a/Source/bindings/tests/results/core/V8DataView.cpp b/Source/bindings/tests/results/core/V8DataView.cpp
index a34ed9d42942c3db52d047fa8c1dfbd3c7641130..a0b2932e5778f620f3c83a3c5d917d773a89ae79 100644
--- a/Source/bindings/tests/results/core/V8DataView.cpp
+++ b/Source/bindings/tests/results/core/V8DataView.cpp
@@ -20,7 +20,7 @@
 
 namespace blink {
 
-const WrapperTypeInfo V8DataView::wrapperTypeInfo = { gin::kEmbedderBlink, 0, V8DataView::refObject, V8DataView::derefObject, V8DataView::trace, 0, 0, V8DataView::installConditionallyEnabledMethods, V8DataView::installConditionallyEnabledProperties, "DataView", &V8ArrayBufferView::wrapperTypeInfo, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::ObjectClassId, WrapperTypeInfo::NotInheritFromEventTarget, WrapperTypeInfo::Independent, WrapperTypeInfo::RefCountedObject };
+const WrapperTypeInfo V8DataView::wrapperTypeInfo = { gin::kEmbedderBlink, 0, V8DataView::refObject, V8DataView::derefObject, V8DataView::trace, 0, 0, V8DataView::preparePrototypeObject, V8DataView::installConditionallyEnabledProperties, "DataView", &V8ArrayBufferView::wrapperTypeInfo, WrapperTypeInfo::WrapperTypeObjectPrototype, WrapperTypeInfo::ObjectClassId, WrapperTypeInfo::NotInheritFromEventTarget, WrapperTypeInfo::Independent, WrapperTypeInfo::RefCountedObject };
 
 // This static member must be declared by DEFINE_WRAPPERTYPEINFO in TestDataView.h.
 // For details, see the comment of DEFINE_WRAPPERTYPEINFO in