Deploying a chrome packaged app and publishing updates on the chrome web store allows users to automatically receive application updates. There are situations where you want
According to the Google Chrome documentation you need to have
chrome.runtime.onUpdateAvailable.addListener(function(details) {
chrome.runtime.reload(); // To restart the chrome App instantaneously
});
But this take time to reflect JS changes into the chrome because background.js loaded into the background and it needs to be unloaded and loaded again
To cop this situation you need to include
chrome.runtime.onInstalled.addListener(function(details) {
chrome.runtime.reload();
});
as wel.
onInstalled called whenever google extension installed first time (fresh installation), google extension updated or google chrome updated.