Reviewed by Darin.

        Fix for http://bugzilla.opendarwin.org/show_bug.cgi?id=8707:
        event.clientX and event.clientY should be relative to the viewport, not the canvas

        Make sure clientX and clientY take into account the scroll offsets
        of the view.

        * dom/EventTargetNode.cpp:
        (WebCore::EventTargetNode::dispatchMouseEvent):
        * dom/MouseEvent.cpp:
        (WebCore::MouseEvent::MouseEvent):
        * dom/MouseEvent.h:
        * dom/MouseRelatedEvent.cpp:
        (WebCore::MouseRelatedEvent::MouseRelatedEvent):
        (WebCore::MouseRelatedEvent::initCoordinates):
        * dom/MouseRelatedEvent.h:
        * dom/WheelEvent.cpp:
        (WebCore::WheelEvent::WheelEvent):
        * page/FrameView.cpp:
        (WebCore::FrameView::dispatchDragEvent):

LayoutTests:

        Reviewed by Darin.

        Test cases for
        <http://bugzilla.opendarwin.org/show_bug.cgi?id=8707>
        event.clientX and event.clientY should be relative to the viewport, not the canvas

        * fast/dom/window-xy-properties-expected.txt: Added.
        * fast/dom/window-xy-properties.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@15032 268f45cc-cd09-0410-ab3c-d52691b4dbfc