});
Setting the popup to the empty string ('') disables the popup. Event chrome.(page|browser)Action.onClicked will fire when the user clicks on the action's icon, if no popup is set.
This enhancement should be in the stable channel in version 5.0. Like all new API additions, it will not work on older versions of chrome. You can prevent users of older chrome versions from installing your extension using the "minimum_chrome_version" property in your manifest:
{
...
"minimum_chrome_version": "5.0"
}
As always, let us know of any issues you find.
Sam