TypeScriptify ServiceDispatcher
TypeScriptify ServiceDispatcher

R=993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org

Bug: 1011811
Change-Id: I6860c6df09cf307d939018fc1b46a181d6d962a3
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2463345
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Paul Lewis <8915f5d5c39a08c5a3e8a8d7314756e4580816f9@chromium.org>

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