extension-section-1-background-1

background.js

function disableIcon(tabId) {
  chrome.browserAction.setIcon({
    tabId: tabId,
    path: {
      '16': '/images/icon16-gray.png',
      '32': '/images/icon32-gray.png',
    },
  })
  chrome.browserAction.setPopup({
    tabId,
    popup: '',
  })
}
function enableIcon(tabId) {
  chrome.browserAction.setIcon({
    tabId: tabId,
    path: {
      '16': '/images/icon16.png',
      '32': '/images/icon32.png',
    },
  })
  chrome.browserAction.setPopup({
    tabId,
    popup: 'popup.html',
  })
}