use-cc-etc

This requires using Cc rather than Components.classes, and the same for Components.interfaces, Components.results and Components.utils. This has a slight performance advantage by avoiding the use of the dot.

Examples of incorrect code for this rule:

let foo = Components.classes['bar'];
let bar = Components.interfaces.bar;
Components.results.NS_ERROR_ILLEGAL_INPUT;
Components.utils.reportError('fake');

Examples of correct code for this rule:

let foo = Cc['bar'];
let bar = Ci.bar;
Cr.NS_ERROR_ILLEGAL_INPUT;
Cu.reportError('fake');