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/extensions/org/eclipse/ui/actions/DeleteResourceAction.java
return code == 0; 
	}
	/**
	 * Return an array of the currently selected resources.
	 * 
	 * @return the selected resources
	 */
	private IResource[] getSelectedResourcesArray() {
		List selection = getSelectedResources();
		IResource[] resources = new IResource[selection.size()];
		selection.toArray(resources);
		return resources;
	}
	/**
	 * Returns a bit-mask containing the types of resources in the selection.
	 * 
	 * @param resources
	 *            the selected resources
	 */
	private int getSelectedResourceTypes(IResource[] resources) {
		int types = 0;
		for (int i = 0; i < resources.length; i++) {
			types |= resources[i].getType();
		}
		return types;
	}
	/*
	 * (non-Javadoc) Method declared on IAction.
	 */
	public void run() {