Hacking Firefox to Always Auto Save Password without Showing Notification Bar

Normal Execution of Saving Password in Firefox

When you submit a form with username and password, it will process the function:

• _onFormSubmit() in nsLoginManager.js
• promptToSavePassword in nsLoginManagerPrompter.js
• _showSaveLoginNotification in nsLoginManagerPrompter.js
• addLogin in nsLoginManager.js 

Steps for hacking Firefox Notification Bar

• Close Firefox
• Edit nsLoginManagerPrompter.js with notepad which is normally located in C:\Program Files\Mozilla Firefox\components\
• Delete all code inside the function:

_showSaveLoginNotification : function (aNotifyBox, aLogin) { }

• Add a new code:

var pwmgr = this._pwmgr;
      pwmgr.addLogin(aLogin);      

•  Now whenever you login to any website, Firefox will auto save the site, username and password to the  login manager WITHOUT showing the notification bar