- fix http://bugzilla.opendarwin.org/show_bug.cgi?id=3784

    - fix bugzilla.opendarwin.org/show_bug.cgi?id=3784
          <rdar://problem/4483827> JavaScript save dialog disappears right away (sheet triggers blur event) (3784)

        * WebView/WebHTMLView.m:
        (-[WebHTMLView _updateFocusState]): Treat window as having focus if its sheet is key.
        (-[WebHTMLView addWindowObservers]): Observe all focus notifications, not just the ones involving this window.
        (-[WebHTMLView removeWindowObservers]): Ditto.
        (-[WebHTMLView windowDidBecomeKey:]): Add checks so that we call the methods only when appropriate,
        since this will now be called for all windows.
        (-[WebHTMLView windowDidResignKey:]): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@13431 268f45cc-cd09-0410-ab3c-d52691b4dbfc