Linting.

src/background.js

@@ -1226,7 +1226,7 @@ function initializeGhosteryModules() {
 		conf.version_history = version_history;
 
 		metrics.ping('upgrade');
-		//We don't want install_complete pings for upgrade
+		// We don't want install_complete pings for upgrade
 		conf.metrics.install_complete_all = Number(new Date().getTime());
 	} else if (globals.JUST_INSTALLED) {
 		log('JUST INSTALLED');