Reviewed by Sam Weinig.

        - fix https://bugs.webkit.org/show_bug.cgi?id=20925
          LEAK messages appear every time I quit

        * JavaScriptCore.exp: Updated, and also added an export
        needed for future WebCore use of JSC::StructureID.

        * wtf/RefCountedLeakCounter.cpp:
        (WTF::RefCountedLeakCounter::suppressMessages): Added.
        (WTF::RefCountedLeakCounter::cancelMessageSuppression): Added.
        (WTF::RefCountedLeakCounter::RefCountedLeakCounter): Tweaked a bit.
        (WTF::RefCountedLeakCounter::~RefCountedLeakCounter): Added code to
        log the reason there was no leak checking done.
        (WTF::RefCountedLeakCounter::increment): Tweaked a bit.
        (WTF::RefCountedLeakCounter::decrement): Ditto.

        * wtf/RefCountedLeakCounter.h: Replaced setLogLeakMessages with two
        new functions, suppressMessages and cancelMessageSuppression. Also
        added m_ prefixes to the data member names.

2008-09-18  Darin Adler  <darin@apple.com>

        Reviewed by Sam Weinig.

        - fix https://bugs.webkit.org/show_bug.cgi?id=20925
          LEAK messages appear every time I quit

        * WebView/WebPreferences.mm:
        (-[WebPreferences setFullDocumentTeardownEnabled:]): Removed unneeded call
        to setLogLeakMessages.
        * WebView/WebView.mm:
        (-[WebView _closeWithFastTeardown]): Call RefCountedLeakCounter::suppressMessages,
        telling it that we can't track leaks because at least one WebView was closed with
        fast teardown.
        (-[WebView _close]): Removed unneeded call to setLogLeakMessages. Added a call to
        cancelMessageSuppression since the WebView is no longer open.
        Added an explicit garbage collect to help with the case where we're closing during
        the quit process -- the garbageCollectSoon() calls done inside WebCore won't help
        us in that case.
        (-[WebView initWithFrame:frameName:groupName:]): Call
        RefCountedLeakCounter::suppressMessages telling it that we can't track leaks
        because at least one WebView is currently open.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@36631 268f45cc-cd09-0410-ab3c-d52691b4dbfc