Have Frame::script() return a reference

Source/bindings/v8/ScriptEventListener.cpp

Index: Source/bindings/v8/ScriptEventListener.cpp
diff --git a/Source/bindings/v8/ScriptEventListener.cpp b/Source/bindings/v8/ScriptEventListener.cpp
index b99b22dbcf615bca103f2d2c7f29e05df31a260f..3283ed33edc520b1654e46df112c7680f340001f 100644
--- a/Source/bindings/v8/ScriptEventListener.cpp
+++ b/Source/bindings/v8/ScriptEventListener.cpp
@@ -63,10 +63,10 @@ PassRefPtr<V8LazyEventListener> createAttributeEventListener(Node* node, const Q
     v8::Isolate* isolate;
     if (Frame* frame = node->document().frame()) {
         isolate = toIsolate(frame);
-        ScriptController* scriptController = frame->script();
-        if (!scriptController->canExecuteScripts(AboutToExecuteScript))
+        ScriptController& scriptController = frame->script();
+        if (!scriptController.canExecuteScripts(AboutToExecuteScript))
             return 0;
-        position = scriptController->eventHandlerPosition();
+        position = scriptController.eventHandlerPosition();
         sourceURL = node->document().url().string();
     } else {
         isolate = v8::Isolate::GetCurrent();
@@ -83,11 +83,11 @@ PassRefPtr<V8LazyEventListener> createAttributeEventListener(Frame* frame, const
     if (value.isNull())
         return 0;
 
-    ScriptController* scriptController = frame->script();
-    if (!scriptController->canExecuteScripts(AboutToExecuteScript))
+    ScriptController& scriptController = frame->script();
+    if (!scriptController.canExecuteScripts(AboutToExecuteScript))
         return 0;
 
-    TextPosition position = scriptController->eventHandlerPosition();
+    TextPosition position = scriptController.eventHandlerPosition();
     String sourceURL = frame->document()->url().string();
 
     return V8LazyEventListener::create(name.localName().string(), eventParameterName(frame->document()->isSVGDocument()), value, sourceURL, position, 0, toIsolate(frame));
@@ -131,7 +131,7 @@ ScriptState* eventListenerHandlerScriptState(Frame* frame, EventListener* listen
         return 0;
     V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener);
     v8::HandleScope scope(toIsolate(frame));
-    v8::Handle<v8::Context> v8Context = frame->script()->windowShell(v8Listener->world())->context();
+    v8::Handle<v8::Context> v8Context = frame->script().windowShell(v8Listener->world())->context();
     return ScriptState::forContext(v8Context);
 }