Have Frame::script() return a reference

Source/core/frame/Frame.h

Index: Source/core/frame/Frame.h
diff --git a/Source/core/frame/Frame.h b/Source/core/frame/Frame.h
index 975b1171ae3f89576ec7ee8f65ae135753cd97c8..05eb05630b1cc0e4f18c1ddb9b998afcb1a41deb 100644
--- a/Source/core/frame/Frame.h
+++ b/Source/core/frame/Frame.h
@@ -104,7 +104,7 @@ namespace WebCore {
         AnimationController& animation() const;
         InputMethodController& inputMethodController() const;
         FetchContext& fetchContext() const { return loader()->fetchContext(); }
-        ScriptController* script();
+        ScriptController& script();
         SpellChecker& spellChecker() const;
 
         RenderView* contentRenderer() const; // Root of the render tree for the document contained in this frame.
@@ -217,9 +217,9 @@ namespace WebCore {
         return m_view.get();
     }
 
-    inline ScriptController* Frame::script()
+    inline ScriptController& Frame::script()
     {
-        return m_script.get();
+        return *m_script;
     }
 
     inline DOMWindow* Frame::domWindow() const