Reviewed by Hyatt.

    Reviewed by Hyatt.

        Render tree memory savings, part 2

        - Move staticX and staticY variables to RenderLayer since they are only
          applicable to positioned objects
        - Move very rarely used overrideSize variable to hash

        These changes shrink all box types by 12 bytes

        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::RenderBox):
        (WebCore::RenderBox::destroy):
        (WebCore::RenderBox::overrideSize):
        (WebCore::RenderBox::setOverrideSize):
        (WebCore::RenderBox::overrideWidth):
        (WebCore::RenderBox::overrideHeight):
        (WebCore::RenderBox::position):
        (WebCore::RenderBox::calcWidth):
        (WebCore::RenderBox::calcHeight):
        (WebCore::RenderBox::staticX):
        (WebCore::RenderBox::staticY):
        (WebCore::RenderBox::setStaticX):
        (WebCore::RenderBox::setStaticY):
        (WebCore::RenderBox::calcAbsoluteHorizontal):
        (WebCore::RenderBox::calcAbsoluteVertical):
        (WebCore::RenderBox::calcAbsoluteHorizontalReplaced):
        (WebCore::RenderBox::calcAbsoluteVerticalReplaced):
        * rendering/RenderBox.h:
        * rendering/RenderLayer.cpp:
        (WebCore::RenderLayer::RenderLayer):
        * rendering/RenderLayer.h:
        (WebCore::RenderLayer::staticX):
        (WebCore::RenderLayer::staticY):
        (WebCore::RenderLayer::setStaticX):
        (WebCore::RenderLayer::setStaticY):
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::RenderObject):
        * rendering/RenderObject.h:
        (WebCore::):
        (WebCore::RenderObject::hasOverrideSize):
        (WebCore::RenderObject::setHasOverrideSize):
        * rendering/RenderWidget.cpp:
        (WebCore::RenderWidget::destroy):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@20653 268f45cc-cd09-0410-ab3c-d52691b4dbfc