component {bb7c5199-c0f7-4976-9f6d-1306e32c5591} PushServiceHandler.js contract @mozilla.org/dom/push/test/PushServiceHandler;1 {bb7c5199-c0f7-4976-9f6d-1306e32c5591} category push chrome://test-scope @mozilla.org/dom/push/test/PushServiceHandler;1