The Reporting API
Reporting API brings a common infrastructure for the browser to send reports for various issues: CSP violations, deprecations, browser interventions, network errors, and feature policy violations.
content-security-policy
interventions
deprecations
removals
feature-policy
reporting-observer
analytics
reporting
Introduction to Feature Policy
Feature Policy allows developers to selectively enable, disable, and modify the behavior of certain APIs and features in the browser. It's like CSP, but for features! Shipped in Chrome 60.