Google Chrome Extensions (Lab)-Interface-browser actions

Use the browser action to add an icon to the toolbar (to the right of the address bar) of Google Chrome's main interface, and add tooltips, tags, and a pop-up panel to the drop icon.

As shown in the following illustration: A colorful icon and a panel that pops up below.

If you want to create an icon that is not always displayed, use the page action instead of the browser action.

Manifest

Mount the extension of your browser action, the code for the manifest file is as follows:

1:　{
2:　　"name":　"My　extension",
3:　　...
4:　 　"browser_action":　{
5:　　　"default_icon":　"images/icon19.png", 　//　required
6:　　　"default_title":　"Google　Mail",　　　//　 optional;　shown　in　tooltip
7:　　　"popup":　"popup.html"　　　　 　　　　//　optional
8:　　},
9:　　...
10:　}