Implement CustomElementDefined devtools protocol

Let's add custom element badges in Chrome devtools - just like Firefox has.

• chrome

Prototype headingoffset attribute

Work on an implementation of the headingoffset attribute in Chrome

• chrome

Implement Invoker Commands in WebKit

• meta
• webkit

Guard showModal() behind user activation

• firefox

Define ARIA semantics for <table>

Define mapping table for "<video loading=lazy>

AX Mappings for commandfor

Chrome needs accessibility mappings for commandfor, like popovertarget.

• chrome

Specify invoker commands in HTML

The invokers proposal needs an HTML spec.

• chrome

Implement Invoker Commands in Chrome

Tracking task for implementation work in Chrome

• meta
• chrome

Implement Invoker Commands in Firefox

Tracking task for implementation work in Firefox

• meta
• firefox

Implement :has-slotted in Chrome

Tracking task for implementing :has-slotted in Chrome

• meta
• chrome

Implement :has-slotted in WebKit

Tracking task for implementing :has-slotted in WebKit

• meta
• webkit

Implement Observable base class in Firefox

• firefox
• meta

Implement Observable base class in Firefox

Tracking task for implementing :has-slotted in the three major browsers

• firefox

Implement Observable base class in Firefox

Tracking task for implementing :has-slotted in the three major browsers

• meta

Implement :has-slotted in Firefox

Tracking task for implementing :has-slotted in the three major browsers

• firefox

Intent to Ship :has-slotted for Firefox

• firefox

Intent to Ship :has-slotted for Chrome

• chrome