Reviewed by Darin

    Reviewed by Darin

        Grammar/Spelling code re-homing, baby step one: put isGrammarCheckingEnabled in Editor
        since that's where isContinousSpellCheckingEnabled lives.

        * editing/Editor.h:
        * editing/Editor.cpp:
        (WebCore::Editor::isGrammarCheckingEnabled):
        new method, calls through to client a la isContinuousSpellCheckingEnabled

        * bridge/mac/FrameMac.mm:
        (WebCore::FrameMac::advanceToNextMisspelling):
        call editor() rather than editor()->client()
        (WebCore::FrameMac::markMisspellings):
        ditto

        * platform/ContextMenu.cpp:
        (WebCore::ContextMenu::populate):
        ditto

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@18031 268f45cc-cd09-0410-ab3c-d52691b4dbfc