UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.76 Safari/537.36

Steps to reproduce the problem:
1. With Chrome 55.0.2883.95 disable plugins (e.g. Flash, Widevine, Native Client) from chrome://plugins
2. Update to Chrome 56.0.2924.76.
3. Go to chrome://plugins, observe the previously disabled plugins to be enabled again.

What is the expected behavior?
Previously disabled plugins should stay disabled over Chrome updates.

What went wrong?
Previously disabled plugins did not stay disabled over the update from Chrome 55.0.2883.95 to Chrome 56.0.2924.76.

The attached screenshots are from an attempt to reproduce this issue. The screenshot with disabled plugins is the Chrome 55 chrome://plugins page, the other one is taken right after updating to Chrome 56.

Did this work before? N/A 

Chrome version: 56.0.2924.76  Channel: stable
OS Version: OS X 10.12.3
Flash Version: 24.0.0.194