Bug 123761 [Decorators] Add properties to decoration context
In order to support Team state decorations properly, I need the ability to associate properties with a decoration context. I will attach a patch.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/IDecorationContext.java
/**
	 * Return the ids of the contexts that are active for
	 * the element that is being decorated. Context ids identify
	 * a command {@link Context}.
	 * @return the ids of the contexts that are active for
	 * the element that is being decorated
	 * @see org.eclipse.core.commands.contexts.Context
	 */
	String[] getContextIds();
}