A common misconception I've seen with Googlebooks is that the Quick Insert and Google logo keys are new. They're not, as they first debuted a couple of years ago on some Chromebooks. But there is something new for Googlebooks that's ripped straight from Android phones circa 2014.
Source: [The Verge](https://www.theverge.com/tech/1007409/androids-physical-navigation-buttons-are-back-on-googlebooks-but-not-the-way-you-think)