Smart Text Selection is a recent addition to Android. Added in version 8.0 Oreo, this feature adds useful actions to context menu (right click / long-press). For example, if you select a phone number, you will see a link to the Phone app. If you copy an address, you’ll see an option to search that in Google Maps.
Here is a video demo, from Google I/O 2017:
This Android feature is now coming to Chrome OS. Now that the entire Android ecosystem is available on Chrome OS, this may not be a big deal. Anyways, here are the details of the flag that’s available on the latest Canary channel.
Name: Smart Text Selection
Description: Shows quick actions for text selections in the context menu. – Chrome OS
I enabled this flag, restarted my Pixelbook, but I am yet to get this to work. This is the Canary channel that we are talking about, so it might take a while before this starts working. For what’s worth, the “Better Together” feature is slowly making some progress:
Stay tuned for more updates!