Every day more of my contacts are sharing photos and updates on Google+.
I started digging about the best solution for it. Finally after trying some extensions I'm sticking with:
It's very simple. It just show a "Share on.." link wich will open the standard Twitter share function.
You'll be able to edit the tweet before sending it. You won't need to grant any access to Twitter because, in fact, you are tweeting from Twitter and not from the extension 😉
Download it from the Chrome Store.