Recently, Google Chrome added a notification feature that sticks an alert icon in the menu bar in OS X. The update enraged many users who complain the OS already has a central system for managing notifications that they would expect Chrome to take advantage of. Users also have no interest in seeing spammy extension alerts or having a useless notification bell clutter up their menu bars.
The simple answer to this problem would just be to disable the feature…If it weren’t for the fact that Google seemed to have buried the option in the Experiments/Flags page. The menu bar icon cannot be reordered using “cmd+” in addition to the inability to work with Bartender.app.
The only way to “hide” is to disable it outright via chrome://flags. Search for “Enable rich notifications“
Enable rich templated notifications – Both HTML5 notifications and app notifications will be shown through new Notification Center