Here is a cool new feature coming to Google Chrome; editing saved usernames and passwords. This feature is currently available on Chromium nightly builds.
Just go to chrome://settings/passwords, click on the password you want to edit and click the “Overwrite” says François Beaufort, explaining the new feature.
Save New Password from Settings Page
A bonus. You can add new user name and password combos from the Settings page now.
From the same screen as you edit saved passwords, you can now add new ones too. Enter the URL, username, password and click Done.
I assume this will show up in the next Dev update, and we will get try this on Beta and Stable channels a few weeks after that.
Stay tuned for more on this!