Make DragController::maxDragImageSize a function to get rid of the global initializer.
        
        * page/DragController.cpp:
        (WebCore::DragController::doImageDrag):
        * page/DragController.h:
        * page/mac/DragControllerMac.mm:
        (WebCore::DragController::maxDragImageSize):
        * page/qt/DragControllerQt.cpp:
        (WebCore::DragController::maxDragImageSize):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@19713 268f45cc-cd09-0410-ab3c-d52691b4dbfc