Google Chrome doesn’t import Keychain credidentials after update

This answer is no longer correct: OS X Keychain support is being removed from Chrome 45. See @patte8's answer for more information.

As far as I can tell, Chrome uses the keychain automatically:

Google Chrome can save your usernames and passwords for different websites. The browser can then automatically complete the sign-in fields for you when you next visit these websites.

These passwords are stored in the same system that contains your saved passwords from other browsers. On a Mac, Google Chrome uses the Keychain Access to store your login information.

Source: https://support.google.com/chrome/bin/answer.py?hl=en&answer=95606

(I'll leave the bit about choosing a specific keychain for Chrome to someone else, I don't know if that can be done)

That is many questions all in one. In order to manage our search engine, we prefer to have 1 question at the time.

1) I'd prefer Chrome to save the credentials in its own storage, instead sharing one with Safari. 2) If not, I'd rather it to not ask me about that. 3) Failing that, it should at least give me the right credentials.

To prevent the pop up is done with granting the Access Control in the key-chain.

Here is a sample:

Open the relevant key chain item and click on access control.

Add and allow Google Chrome to use it.