Reviewed by Eric Seidel.

        Switch controlClipRect to use IntPoint
        https://bugs.webkit.org/show_bug.cgi?id=60806

        Switching controlClipRect to take an IntPoint representing the
        offset to be added instead of a pair of ints.

        No new tests as this is just refactoring.

        * WebCore.xcodeproj/project.pbxproj:
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::nodeAtPoint):
        * rendering/RenderBox.cpp:
        (WebCore::RenderBox::pushContentsClip):
        * rendering/RenderBox.h:
        (WebCore::RenderBox::controlClipRect):
        * rendering/RenderButton.cpp:
        (WebCore::RenderButton::controlClipRect):
        * rendering/RenderButton.h:
        * rendering/RenderListBox.cpp:
        (WebCore::RenderListBox::paintItemBackground):
        (WebCore::RenderListBox::controlClipRect):
        * rendering/RenderListBox.h:
        * rendering/RenderMenuList.cpp:
        (WebCore::RenderMenuList::controlClipRect):
        * rendering/RenderMenuList.h:
        * rendering/RenderTextControlSingleLine.cpp:
        (WebCore::RenderTextControlSingleLine::controlClipRect):
        * rendering/RenderTextControlSingleLine.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@87443 268f45cc-cd09-0410-ab3c-d52691b4dbfc