TypeScriptify AnimationScreenshotPopover.js
TypeScriptify AnimationScreenshotPopover.js

R=dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org

Bug: 1011811
Change-Id: I10c19b965a1fb62b3917c23b5b497f8d8278d84b
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2479136
Reviewed-by: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@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