This reminds me of one time when I logged in to Chrome and misclicked on the dialog that asked whether to sync data. I very quickly went to settings and disabled sync, but I have a feeling Google got all my bookmarks and history and saved passwords.

That's what finally made me delete Chrome (I had already been using Firefox primarily but now have Falkon (WebKit-based KDE browser) instead of Chrome).

Very malicious how the option to keep your information to yourself is gated behind many opt-outs but if you accidentally opt-in once they take everything.