Reviewed by Sam Weinig.

        Add an inlineCapacity template parameter to ListHashSet and use it to shrink the positioned object list hash set.
        https://bugs.webkit.org/show_bug.cgi?id=39304
        <rdar://problem/7998366>

        Add an inlineCapacity template parameter to ListHashSet.

        * wtf/ListHashSet.h:
        (WTF::::ListHashSet):
        (WTF::::operator):
        (WTF::::swap):
        (WTF::::~ListHashSet):
        (WTF::::size):
        (WTF::::capacity):
        (WTF::::isEmpty):
        (WTF::::begin):
        (WTF::::end):
        (WTF::::find):
        (WTF::::contains):
        (WTF::::add):
        (WTF::::insertBefore):
        (WTF::::remove):
        (WTF::::clear):
        (WTF::::unlinkAndDelete):
        (WTF::::appendNode):
        (WTF::::insertNodeBefore):
        (WTF::::deleteAllNodes):
        (WTF::::makeIterator):
        (WTF::::makeConstIterator):
        (WTF::deleteAllValues):
2010-05-18  Anders Carlsson  <andersca@apple.com>

        Reviewed by Sam Weinig.

        Add an inlineCapacity template parameter to ListHashSet and use it to shrink the positioned object list hash set.
        https://bugs.webkit.org/show_bug.cgi?id=39304
        <rdar://problem/7998366>

        Set the inlineCapacity for the positionedObjects ListHashSet to 4 instead of 256. Since a RenderBlock usually has 
        few positioned objects, this saves memory.

        * WebCore.base.exp:
        * rendering/RenderBlock.cpp:
        (WebCore::clipOutPositionedObjects):
        (WebCore::RenderBlock::insertPositionedObject):
        * rendering/RenderBlock.h:
        (WebCore::RenderBlock::positionedObjects):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@59678 268f45cc-cd09-0410-ab3c-d52691b4dbfc