Show DragImage when the dragged element or its parent has transform

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 3125 matching lines @@
 bool EventHandler::tryStartDrag(const MouseEventWithHitTestResults& event)
 {
     freeClipboard(); // would only happen if we missed a dragEnd.  Do it anyway, just
                      // to make sure it gets numbified
     dragState().m_dragClipboard = createDraggingClipboard();
 
     // Check to see if this a DOM based drag, if it is get the DOM specified drag
     // image and offset
     if (dragState().m_dragType == DragSourceActionDHTML) {
         if (RenderObject* renderer = dragState().m_dragSrc->renderer()) {
-            // FIXME: This doesn't work correctly with transforms.
-            FloatPoint absPos = renderer->localToAbsolute();
+            FloatPoint absPos = renderer->localToAbsolute(FloatPoint(), UseTransforms);
             IntSize delta = m_mouseDownPos - roundedIntPoint(absPos);
             dragState().m_dragClipboard->setDragImageElement(dragState().m_dragSrc.get(), IntPoint(delta));
         } else {
             // The renderer has disappeared, this can happen if the onStartDrag handler has hidden
             // the element in some way. In this case we just kill the drag.
             return false;
         }
     }
 
     DragController& dragController = m_frame->page()->dragController();
@@ skipping 573 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore