Have Frame::script() return a reference

Source/bindings/v8/V8Initializer.cpp

 /*
  * Copyright (C) 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 106 matching lines @@
             if (exception && !exception->messageForConsole().isEmpty())
                 event->setUnsanitizedMessage("Uncaught " + exception->toStringForConsole());
         }
     }
 
     // This method might be called while we're creating a new context. In this case, we
     // avoid storing the exception object, as we can't create a wrapper during context creation.
     // FIXME: Can we even get here during initialization now that we bail out when GetEntered returns an empty handle?
     DOMWrapperWorld* world = DOMWrapperWorld::current();
     Frame* frame = firstWindow->document()->frame();
-    if (world && frame && frame->script()->existingWindowShell(world))
+    if (world && frame && frame->script().existingWindowShell(world))
         V8ErrorHandler::storeExceptionOnErrorEventWrapper(event.get(), data, v8::Isolate::GetCurrent());
     firstWindow->document()->reportException(event.release(), callStack, corsStatus);
 }
 
 static void failedAccessCheckCallbackInMainThread(v8::Local<v8::Object> host, v8::AccessType type, v8::Local<v8::Value> data)
 {
     Frame* target = findFrame(host, data, v8::Isolate::GetCurrent());
     if (!target)
         return;
     DOMWindow* targetWindow = target->domWindow();
@@ skipping 82 matching lines @@
     v8::ResourceConstraints resourceConstraints;
     v8::ConfigureResourceConstraintsForCurrentPlatform(&resourceConstraints);
     uint32_t here;
     resourceConstraints.set_stack_limit(&here - kWorkerMaxStackSize / sizeof(uint32_t*));
     v8::SetResourceConstraints(&resourceConstraints);
 
     V8PerIsolateData::ensureInitialized(isolate);
 }
 
 } // namespace WebCore