Typecheck mobile_throttling/ThrottlingManager.js with TypeScript
Typecheck mobile_throttling/ThrottlingManager.js with TypeScript

R=993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org

Bug: 1011811
Change-Id: Ibea83af846c2d42f973c2637e8d3794c7199fc9c
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2418438
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend