Add [TypeChecking=Unrestricted] on DevToolsHost interface

Source/bindings/core/v8/custom/V8DevToolsHostCustom.cpp

 /*
  * Copyright (C) 2007-2009 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 112 matching lines @@
     DevToolsHost* devtoolsHost = V8DevToolsHost::toImpl(info.Holder());
     Vector<ContextMenuItem> items = menu.items();
     devtoolsHost->showContextMenu(event, items);
 }
 
 void V8DevToolsHost::showContextMenuAtPointMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     if (info.Length() < 3)
         return;
 
-    v8::Local<v8::Value> x = v8::Local<v8::Value>::Cast(info[0]);
-    if (!x->IsNumber())
-        return;
+    ExceptionState exceptionState(ExceptionState::ExecutionContext, "showContextMenuAtPoint", "DevToolsHost", info.Holder(), info.GetIsolate());
 
-    v8::Local<v8::Value> y = v8::Local<v8::Value>::Cast(info[1]);
-    if (!y->IsNumber())
-        return;
+    TONATIVE_VOID_EXCEPTIONSTATE(float, x, toRestrictedFloat(info[0], exceptionState), exceptionState);
+    TONATIVE_VOID_EXCEPTIONSTATE(float, y, toRestrictedFloat(info[1], exceptionState), exceptionState);
 
     v8::Local<v8::Value> array = v8::Local<v8::Value>::Cast(info[2]);
     if (!array->IsArray())
         return;
     ContextMenu menu;
     if (!populateContextMenuItems(v8::Local<v8::Array>::Cast(array), menu, info.GetIsolate()))
         return;
 
     Document* document = nullptr;
     if (info.Length() >= 4 && v8::Local<v8::Value>::Cast(info[3])->IsObject()) {
         v8::Local<v8::Object> documentWrapper = v8::Local<v8::Object>::Cast(info[3]);
         if (!V8HTMLDocument::wrapperTypeInfo.equals(toWrapperTypeInfo(documentWrapper)))
             return;
         document = V8HTMLDocument::toImpl(documentWrapper);
     } else {
         v8::Isolate* isolate = info.GetIsolate();
         v8::Handle<v8::Object> windowWrapper = V8Window::findInstanceInPrototypeChain(isolate->GetEnteredContext()->Global(), isolate);
         if (windowWrapper.IsEmpty())
             return;
         DOMWindow* window = V8Window::toImpl(windowWrapper);
         document = window ? toLocalDOMWindow(window)->document() : nullptr;
     }
     if (!document || !document->frame())
         return;
 
     DevToolsHost* devtoolsHost = V8DevToolsHost::toImpl(info.Holder());
     Vector<ContextMenuItem> items = menu.items();
-    devtoolsHost->showContextMenu(document->frame(), static_cast<float>(x->NumberValue()), static_cast<float>(y->NumberValue()), items);
+    devtoolsHost->showContextMenu(document->frame(), x, y, items);
 }
 
 } // namespace blink