code: function updateContextMenu(force) {
      // Only add context menu item when an Ember app has been detected
      var isEmberApp = !!activeTabs[activeTabId] || force;
      if (!isEmberApp && contextMenuAdded) {
        chrome.contextMenus.remove('inspect-ember-component');
        contextMenuAdded = false;
      }
  
      if (isEmberApp && !contextMenuAdded) {
        chrome.contextMenus.create({
          id: 'inspect-ember-component',
          title: 'Inspect Ember Component',
          contexts: ['all'],
          onclick: function() {
            chrome.tabs.sendMessage(activeTabId, {
              from: 'devtools',
              type: 'view:contextMenu'
            });
          }
        });
        contextMenuAdded = true;
      }
    }
docs: Update the tab's contextMenu: https://developer.chrome.com/extensions/contextMenus
  Add a menu item called "Inspect Ember Component" that shows info
  about the component in the inspector.
  @param {Boolean} force don't use the activeTabs array to check for an existing context menu