Typecheck quick_open/QuickPick.js with TypeScript
Typecheck quick_open/QuickPick.js with TypeScript

Bug: 1011811
Change-Id: I599443aea7262964f3958938d7baae8c81c415a8
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2443617
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Johan Bay <c4a91c97e1f8a218202ca733f9e9f5122f475e0f@google.com>

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