- fix <rdar://problem/3059610> VIP: links opened in new frame, window, or tab
          should be redrawn as visited immediately
        - fix <rdar://problem/4382809> Going "back" a page doesn't change the color of
          the visited URL at directory.umi
        - fix http://bugs.webkit.org/show_bug.cgi?id=4941
          Visited links should be marked as visited
        - fix http://bugs.webkit.org/show_bug.cgi?id=7960
          REGRESSION: Visited link color doesn't displayed after loading page from cache

        We now mark all links on a page as "changed" at the appropriate times.

        * WebCore.base.exp: Update since I made completeURL be a const member function.

        * css/CSSStyleSelector.cpp: Got rid of some unneeded globals that could be turned
        into locals. Also changed some static data members to file-scoped globals with
        internal linkage. Renamed the globals to get rid of the m_ prefix. Changed the
        prefix on m_styleNotYetAvailable to s_styleNotYetAvailable.
        (WebCore::CSSStyleSelector::CSSStyleSelector): Updated for name changes.
        (WebCore::parseUASheet): Tweak the comment.
        (WebCore::CSSStyleSelector::loadDefaultStyle): Updated for name changes and to
        use local variables instead of globals where possible.
        (WebCore::CSSStyleSelector::checkPseudoState): Made this a member function so
        it can store the link in a hash. Also changed it to have a return value instead
        of having it modify a global variable. Added code to put the hash into a set so
        we can tell later if this is one of the links that affects this page.
        (WebCore::CSSStyleSelector::canShareStyleWithElement): Updated for the change to
        checkPseudoState.
        (WebCore::CSSStyleSelector::matchUARules): Updated for name changes.
        (WebCore::CSSStyleSelector::styleForElement): Ditto.
        (WebCore::CSSStyleSelector::adjustRenderStyle): Ditto.
        (WebCore::CSSStyleSelector::pseudoStyleRulesForElement): Changed code to read
        the SVG style sheet to use a boolean global and put it right here in the function
        since this is the only code that needs to know about it.
        (WebCore::CSSStyleSelector::checkOneSelector): Updated for name changes.
        (WebCore::colorForCSSValue): Moved code inside the function that is not needed
        anywhere else.
        (WebCore::CSSStyleSelector::getColorFromPrimitiveValue): Updaed for the change
        to checkPseudoState.
        (WebCore::CSSStyleSelector::allVisitedStateChanged): Added. Calls setChanged on
        all links if there were any in the set.
        (WebCore::CSSStyleSelector::visitedStateChanged): Added. Calls setChanged on all
        links if the one that changed is in the set.

        * css/CSSStyleSelector.h: Removed unused StyleSelector class and State enum. Made
        CSSStyleSelector derive from Noncopyable. Made lots of member functions private that
        didn't need to be public, and removed others that could be made into non-member
        functions. Changed pseudoStyleRulesForElement to take a const String& instead of
        a StringImpl*. Added new allVisitedStateChanged and visitedStateChanged functions.
        Got rid of unneeded friend declarations.

        * dom/Document.cpp:
        (WebCore::Document::completeURL): Made const.
        (WebCore::findSlashDotDotSlash): Moved here from PageGroup.
        (WebCore::findSlashSlash): Ditto.
        (WebCore::findSlashDotSlash): Ditto.
        (WebCore::containsColonSlashSlash):
        (WebCore::cleanPath): Ditto.
        (WebCore::matchLetter): Ditto.
        (WebCore::needsTrailingSlash): Ditto.
        (WebCore::Document::visitedLinkHash): Moved this here from PageGroup. This is
        the poor-man's completeURL function. The idea of putting it here is that this
        way it can be alongside the real completeURL function. Later we should figure out
        a way to make this function share more code with the real thing and match behavior.

        * dom/Document.h: Marked completeURL function const. Added visitedLinkHash function.

        * page/DOMWindow.cpp:
        (WebCore::DOMWindow::getMatchedCSSRules): Updated for change to CSSStyleSelector.

        * page/Page.cpp:
        (WebCore::Page::allVisitedStateChanged): Added. Calls allVisitedStateChanged on all
        style selectors.
        (WebCore::Page::visitedStateChanged): Ditto.
        * page/Page.h: Added the above functions.

        * page/PageGroup.cpp:
        (WebCore::PageGroup::isLinkVisited): Changed to take a visitedLinkHash parameter.
        The CSSStyleSelector now handles actually computing the hash, and it does so by
        calling code in Document.
        (WebCore::PageGroup::addVisitedLink): Refactored so the two overloaded copies share
        a bit more code. Added code that calls visitedStateChanged if a new link was added.
        (WebCore::PageGroup::removeVisitedLinks): Added code to call allVisitedStateChanged
        if any visited links are removed.
        * page/PageGroup.h: Include StringHash.h instead of having the AlreadyHashed struct
        definition here.

        * platform/text/StringHash.h:
        (WebCore::CaseFoldingHash::hash): Tweaked to make this a bit more consistent with
        the StringImpl::computeHash function, using the same technique for avoiding 0.
        (WebCore::AlreadyHashed::hash): Added. Was formerly in PageGroup.h.
        (WebCore::AlreadyHashed::avoidDeletedValue): Added. Was formerly in PageGroup.cpp.

        * rendering/RenderStyle.cpp:
        (WebCore::RenderStyle::isStyleAvailable): Changed to use an inline function instead
        of getting directly at a data member so the data member could be made private.

        * loader/FrameLoader.cpp:
        (WebCore::FrameLoader::scrollToAnchor): Added call to updateHistoryForAnchorScroll.
        (WebCore::FrameLoader::updateHistoryForAnchorScroll): Added.
        * loader/FrameLoader.h: Added updateHistoryForAnchorScroll.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@30949 268f45cc-cd09-0410-ab3c-d52691b4dbfc