When you build Chromium yourself, or download a Chromium nightly-build, you need to provide API-key, a secret-phrase and a client-id,
running Chromium without either of those three phrases will seriously compromise Chromium’s functionality.
The is a sort of “inner-Google” page on how to generate, and use the API-Keys needed to make Chromium a properly, fully functional Chrome-compatible browser (including Syncing your bookmarks and other stuff..)
There is an issue, however, with that page (
https://www.chromium.org/developers/how-tos/api-keys) which has not been-updated for a while, especially on the names of the API-services, one, needs to enable in-order to use Chromium in a fully functional mode,
I’ve gathered those services (including a direct link for you to use in-order to activate it)
the following list (Google API-console) is ordered as:
the list of API-services is sorted (A,B,C..) by the
Name of the API-service.