Chrome.identity.getAuthToken not showing Google user list - google-chrome-extension

Question

content.js This is the content page for chrome extension
document.getElementById("signIn").addEventListener("click", function(){
chrome.runtime.sendMessage({task:"switchUser", user: current_user},function(response){
});
});
background.js This is the background page for chrome extension
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse){
if(request.task == "switchUser"){
function getToken(){
chrome.identity.getAuthToken({ interactive: true }, function(token) {
sendResponse(token);
});
}
chrome.identity.removeCachedAuthToken({ token:
currentSessionAccessToken }, getToken);
}
return true;
});
Previous OAuth token is successfully removed but when generating a new one using getAuthToken, the user selection list is not shown. However, I have set interactive to true. What am I missing?

Answer 1

You need to revoke the token first and then remove from cache. Please find the code below for background.js page.
chrome.runtime.onMessage.addListener(
function(request, sender, sendResponse){
if(request.task == "switchUser"){
function getToken(){
chrome.identity.getAuthToken({ interactive: true }, function(token) {
sendResponse(token);
});
}
var xmlHttp = new XMLHttpRequest();
xmlHttp.open('GET', 'https://accounts.google.com/o/oauth2/revoke?token=' + currentSessionAccessToken); //revoke the token calling this url.
xmlHttp.onload = function() {
chrome.identity.removeCachedAuthToken({ token: currentSessionAccessToken }, getToken); //after token is revoked, remove it from cache as well.
}
xmlHttp.onerror = function(){
};
xmlHttp.send();
}
return true;
});