Bug 180758 [IDE] Deleting a project but not the contents asks if you want to delete read-only files
I have noticed that in 3.3M6, if I delete a project that has read-only files in it, it will prompt if I want to delete the files even if I select "Do not delete contents". The files are not actually deleted, but the error dialog should not be presented to the user since the files are not actually being deleted. I don't remember seeing this in 3.3M4 or earlier.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/undo/AbstractResourcesOperation.java
this.addContext(WorkspaceUndoUtil.getWorkspaceUndoContext());
		setTargetResources(resources);
	}
	/**
	 * Create an Abstract Resources Operation
	 * 
	 * @param resourceDescriptions
	 *            the resourceDescriptions describing resources to be created
	 * @param label
	 *            the label of the operation
	 */
	AbstractResourcesOperation(ResourceDescription[] resourceDescriptions,
			String label) {
		super(label);
		addContext(WorkspaceUndoUtil.getWorkspaceUndoContext());
		setResourceDescriptions(resourceDescriptions);
	}
	/**
	 * Delete any resources known by this operation. Store enough information to
	 * undo and redo the operation.
	 * 
	 * @param monitor
	 *            the progress monitor to use for the operation
	 * @param uiInfo
	 *            the IAdaptable (or <code>null</code>) provided by the
	 *            caller in order to supply UI information for prompting the
	 *            user if necessary. When this parameter is not
	 *            <code>null</code>, it contains an adapter for the
	 *            org.eclipse.swt.widgets.Shell.class
	 * @param deleteContent