Bug 29163 SafeRunnable needs to be accessible in JFace
We need to be able to access the SafeRunnable in JFace in order that some error protection can be added to preferences and properties dialogs.
bundles/org.eclipse.ui.workbench/extensions/org/eclipse/jface/dialogs/ErrorDialog.java
/**
	 * Reserve room for this many list items.
	 */
	private static final int LIST_ITEM_COUNT = 7;
	/**
	 * The Details button.
	 */
	private Button detailsButton;
	/**
	 * The title of the dialog.