Enable warnings
Warnings will be enabled by default for everyone in Chrome 56, slated for release in January 2017.
To test the upcoming user experience before that time, install the latest Google Chrome Canary build.
To configure Chrome to show the warning as it will appear in January 2017, open chrome://flags/#mark-non-secure-as and set the Mark non-secure origins as non-secure option to Display a verbose state when password or credit card fields are detected on an HTTP page. Then relaunch your browser.
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