Reviewed by Nate Chapin.

        [v8] Refactoring: extract IntrusiveDOMWrapperMap into a seprate class and files.
        https://bugs.webkit.org/show_bug.cgi?id=52911

        Plain refactoring, covered by the existing tests.

        * WebCore.gypi: IntrusiveDOMWrapperMap.h added.
        * bindings/v8/DOMDataStore.cpp: IntrusiveDOMWrapperMap is moved out of DOMDataStore class.
        * bindings/v8/DOMDataStore.h: IntrusiveDOMWrapperMap is moved out of DOMDataStore class.
        * bindings/v8/IntrusiveDOMWrapperMap.h: Added.
        (WebCore::ChunkedTable::ChunkedTable):
        (WebCore::ChunkedTable::add):
        (WebCore::ChunkedTable::remove):
        (WebCore::ChunkedTable::clear):
        (WebCore::ChunkedTable::visit):
        (WebCore::ChunkedTable::Chunk::Chunk):
        (WebCore::ChunkedTable::clearEntries):
        (WebCore::ChunkedTable::visitEntries):
        (WebCore::IntrusiveDOMWrapperMap::IntrusiveDOMWrapperMap):
        (WebCore::IntrusiveDOMWrapperMap::get):
        (WebCore::IntrusiveDOMWrapperMap::set):
        (WebCore::IntrusiveDOMWrapperMap::contains):
        (WebCore::IntrusiveDOMWrapperMap::visit):
        (WebCore::IntrusiveDOMWrapperMap::removeIfPresent):
        (WebCore::IntrusiveDOMWrapperMap::clear):
        (WebCore::IntrusiveDOMWrapperMap::ChunkedTableTraits::move):
        (WebCore::IntrusiveDOMWrapperMap::ChunkedTableTraits::clear):
        (WebCore::IntrusiveDOMWrapperMap::ChunkedTableTraits::visit):
        * bindings/v8/StaticDOMDataStore.h: include added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76541 268f45cc-cd09-0410-ab3c-d52691b4dbfc