Render Process Hang Test

Use the below controls to trigger a render process hang.
Hang for seconds.
Action after hanging for at least 15 seconds:
Default behavior (Alloy style: Wait; Chrome style: show "Page unresponsive" dialog [1])
Wait
Terminate the render process [2]
[1] The "Page unresponsive" dialog will be auto-dismissed when the hang ends.
[2] After termination the browser navigates to the startup URL or shows an error page.
Observe page responsiveness:

CSS: |  | JavaScript:

(JavaScript will stop updating during the hang)