All JSStringRef creation now happens through a helper function,
        jsStringRef, which takes either a const char* or a const String& and
        returns a JSRetainPtr<JSStringRef>.

        Reviewed by Mitz Pettel.

        * page/InspectorController.cpp:
        Added jsStringRef and converted all callers to
        JSStringCreateWithUTF8CString or JSStringCreateWithCharacters to use
        it.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@32213 268f45cc-cd09-0410-ab3c-d52691b4dbfc