Reviewed by Teh Mitzpettel

        Make it so PageGroups know what their own name is.

        * WebCore.base.exp:

        * page/Page.cpp:
        (WebCore::Page::setGroupName):
        (WebCore::Page::groupName):
        * page/Page.h:

        * page/PageGroup.cpp: Move the PageGroupMap into the PageGroup class.
        (WebCore::PageGroup::PageGroup): Added a c'tor that takes the group name as an argument instead of
          the initial Page.
        (WebCore::PageGroup::pageGroup): Handles creating and mapping names to groups
        * page/PageGroup.h:
        (WebCore::PageGroup::name):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@32524 268f45cc-cd09-0410-ab3c-d52691b4dbfc