October 2016 web platform update

Now available in Chrome
Limited availability

Autonomous custom elements: Autonomous custom elements are HTML elements with a hyphenated tag name (like <example-element>) that have behaviors you define. Learn more.
BroadcastChannel: The BroadcastChannel API allows you to send messages between same-origin browsing contexts, such as between the same page loaded in multiple tabs. Learn more.
Resource size: The decodedSize, encodedSize, and transferSize properties of the PerformanceResourceTiming API reports the size of resources loaded. Learn more.
Shadow DOM: Shadow DOM allows you to attach encapsulated "shadow" DOM trees to elements. A shadow DOM tree is a separate component, isolated from the scripts and styles in other parts of the document. This is a part of Web Components. Learn more.

Autonomous custom elements: Autonomous custom elements are HTML elements with a hyphenated tag name (like <example-element>) that have behaviors you define. Learn more.
BroadcastChannel: The BroadcastChannel API allows you to send messages between same-origin browsing contexts, such as between the same page loaded in multiple tabs. Learn more.
Resource size: The decodedSize, encodedSize, and transferSize properties of the PerformanceResourceTiming API reports the size of resources loaded. Learn more.
Shadow DOM: Shadow DOM allows you to attach encapsulated "shadow" DOM trees to elements. A shadow DOM tree is a separate component, isolated from the scripts and styles in other parts of the document. This is a part of Web Components. Learn more.