version in a static to prevent generating it every time. This is needed
        clean up to fix <rdar://problem/6292331>. Moved all code to WebPrivate so
        the class method can be in the WebViewPrivate.h header.

        Reviewed by John Sullivan.

        * WebView/WebView.mm:
        (callGestalt): Moved. Same code.
        (createMacOSXVersionString): Moved. Same code.
        (createUserVisibleWebKitVersionString): Moved from _userVisibleBundleVersionFromFullVersion:
        and returns a copied string.
        (+[WebView _standardUserAgentWithApplicationName:andWebKitVersion:]): Made into a class method.
        (-[WebView WebCore::_userAgentForURL:]): Changed to cache the WebKit version.
        * WebView/WebViewPrivate.h: Added +_standardUserAgentWithApplicationName:andWebKitVersion:.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37598 268f45cc-cd09-0410-ab3c-d52691b4dbfc