Bug 261164 [CommonNavigator] Add dynamic tracing for DnD
The options were put in, but the tracing was never actually hooked up.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonDropAdapter.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.PluginDropAdapter#drop(org.eclipse.swt.dnd.DropTargetEvent)
	 */
	public void drop(DropTargetEvent event) {
		 
		
		 
		
		validateDrop(getCurrentTarget(), getCurrentOperation(), event.currentDataType);
		if (PluginTransfer.getInstance().isSupportedType(event.currentDataType)) {
			super.drop(event);
		} else {
			Object target = getCurrentTarget() != null ? 
							getCurrentTarget() : getViewer().getInput();
							
			CommonDropAdapterAssistant[] assistants = dndService
				.findCommonDropAdapterAssistants(target, getCurrentTransfer());
			IStatus valid = null;
			for (int i = 0; i < assistants.length; i++) {
				try {
 
					valid = assistants[i].validateDrop(getCurrentTarget(),
							getCurrentOperation(), getCurrentTransfer());
					if (valid != null && valid.isOK()) {
						assistants[i].handleDrop(this, event,
								getCurrentTarget());
						return;
					}