JSC::Bindings m_rootObject->isValid() assert fails when running layout tests
        https://bugs.webkit.org/show_bug.cgi?id=53716

        Changed ASSERT to be an if for the case where the RuntimeObject was
        GC'ed before RootObject::invalidate is called.  In that case there is 
        no need to remove the RuntimeObject from the RootObject.  The isValid()
        call will be false in this case, but the RuntimeObject has already
        been removed from the RootObject.  Added similar defensive code
        in RootObject::removeRuntimeObject().

        * bridge/jsc/BridgeJSC.cpp:
        (JSC::Bindings::Instance::willDestroyRuntimeObject):
        * bridge/runtime_root.cpp:
        (JSC::Bindings::RootObject::removeRuntimeObject):
2011-02-08  Michael Saboff  <msaboff@apple.com>

        Reviewed by Darin Adler.

        JSC::Bindings m_rootObject->isValid() assert fails when running layout tests
        https://bugs.webkit.org/show_bug.cgi?id=53716

        Re-enabled tests that are fixed with the corresponding change in 
        WebCore.

        * platform/gtk/Skipped:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@77979 268f45cc-cd09-0410-ab3c-d52691b4dbfc