IDL: Use ALLOW_ONLY_INLINE_ALLOCATION() in dictionaries

Source/web/WebDocument.cpp

Index: Source/web/WebDocument.cpp
diff --git a/Source/web/WebDocument.cpp b/Source/web/WebDocument.cpp
index d5cc1b13e5b84d82bdf21191c3b0ae85cdc08159..dc82bc51dc87a59460d99f0fc842c3993a32fdbb 100644
--- a/Source/web/WebDocument.cpp
+++ b/Source/web/WebDocument.cpp
@@ -331,8 +331,11 @@ v8::Handle<v8::Value> WebDocument::registerEmbedderCustomElement(const WebString
     v8::Isolate* isolate = v8::Isolate::GetCurrent();
     Document* document = unwrap<Document>();
     TrackExceptionState exceptionState;
-    ElementRegistrationOptions* registrationOptions = V8ElementRegistrationOptions::toImpl(isolate, options, exceptionState);
-    ScriptValue constructor = document->registerElement(ScriptState::current(isolate), name, *registrationOptions, exceptionState, CustomElement::EmbedderNames);
+    ElementRegistrationOptions registrationOptions;
+    V8ElementRegistrationOptions::toImpl(isolate, options, registrationOptions, exceptionState);
+    if (exceptionState.hadException())
+        return v8::Handle<v8::Value>();
+    ScriptValue constructor = document->registerElement(ScriptState::current(isolate), name, registrationOptions, exceptionState, CustomElement::EmbedderNames);
     ec = exceptionState.code();
     if (exceptionState.hadException())
         return v8::Handle<v8::Value>();