Some settings are linked to the PageGroup not the Page.  Create a new class for those.
        https://bugs.webkit.org/show_bug.cgi?id=43794

        Since persistient storage is shared between pages, there's no way to modify
        some settings related to it on a per page basis.  As such, it's not technically
        correct for these settings to be on the Page's settings.  Create a new class
        called GroupSettings, move  group-wide local storage setting there (the other we
        can't), and add a new setting for IndexedDB's path (which is prompting this change).

        No behavior has changed, so no tests.

        * Android.mk:
        * CMakeLists.txt:
        * GNUmakefile.am:
        * WebCore.gypi:
        * WebCore.pro:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
        * page/GroupSettings.cpp: Added.
        (WebCore::GroupSettings::GroupSettings):
        (WebCore::GroupSettings::setLocalStorageQuotaBytes):
        (WebCore::GroupSettings::setLocalStorageDatabasePath):
        (WebCore::GroupSettings::setIndexedDBDatabasePath):
        * page/GroupSettings.h: Added.
        (WebCore::GroupSettings::create):
        (WebCore::GroupSettings::localStorageQuotaBytes):
        (WebCore::GroupSettings::localStorageDatabasePath):
        (WebCore::GroupSettings::indexedDBDatabasePath):
        * page/PageGroup.cpp:
        (WebCore::PageGroup::PageGroup):
        (WebCore::PageGroup::localStorage):
        * page/PageGroup.h:
        (WebCore::PageGroup::groupSettings):
        * page/Settings.cpp:
        (WebCore::Settings::Settings):
        (WebCore::Settings::setSessionStorageQuota):
        * page/Settings.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@65405 268f45cc-cd09-0410-ab3c-d52691b4dbfc