Remove uses of deprecated toWebCoreStringWithUndefinedOrNullCheck(v8::Handle<v8::Value>)

Source/bindings/v8/custom/V8WindowCustom.cpp

 /*
  * Copyright (C) 2009, 2011 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 348 matching lines @@
 
 void V8Window::showModalDialogMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     DOMWindow* impl = V8Window::toNative(info.Holder());
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "showModalDialog", "Window", info.Holder(), info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToFrame(impl->frame(), exceptionState)) {
         exceptionState.throwIfNeeded();
         return;
     }
 
-    // FIXME: Handle exceptions properly.
-    String urlString = toWebCoreStringWithUndefinedOrNullCheck(info[0]);
+    V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, urlString, info[0]);
     DialogHandler handler(info[1]);
-    String dialogFeaturesString = toWebCoreStringWithUndefinedOrNullCheck(info[2]);
+    V8TRYCATCH_FOR_V8STRINGRESOURCE_VOID(V8StringResource<WithUndefinedOrNullCheck>, dialogFeaturesString, info[2]);
 
     impl->showModalDialog(urlString, dialogFeaturesString, activeDOMWindow(), firstDOMWindow(), setUpDialog, &handler);
 
     v8SetReturnValue(info, handler.returnValue(info.GetIsolate()));
 }
 
 void V8Window::openMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     DOMWindow* impl = V8Window::toNative(info.Holder());
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "open", "Window", info.Holder(), info.GetIsolate());
@@ skipping 183 matching lines @@
     v8::Handle<v8::Context> context = frame->script().currentWorldContext();
     if (context.IsEmpty())
         return v8Undefined();
 
     v8::Handle<v8::Object> global = context->Global();
     ASSERT(!global.IsEmpty());
     return global;
 }
 
 } // namespace WebCore