Dispatch event.isTrusted === true with Debugger API Chrome.

This example was used as a reference: https://developer.chrome.com/extensions/samples#search:debugger

• Click the extension icon to enable debugger;
• Click 't' to dispatch trusted 'mousedown' and 'mouseup' events;
• Click 'r' to dispatch regular javascript events.

You can see that clicking 't' results in isTrusted===true; You can also see that dispatching a trusted event via debugger might take around 2ms, while dispatching a regular event takes 0ms.