title: get mouse coordinate in google chrome extension
body: <p>I desperately looking for the method to retrieve the mouse coordinates of the user when a click on my contextMenu or when using a shortcutKey</p>
  
  <p>I would like if possible not to have to use the onmousemove event that requires movement of the user :/</p>
  
  <p>Do you know how?</p>
  
  <p>Thank you in advance for your response</p>