Removed registerCSSFiles call from wasShown to constructor as styles were not being registered
Removed registerCSSFiles call from wasShown to constructor as styles were not being registered

Fixed: 1237819
Change-Id: Ibe9e47b1d93a7a2a95a77d9ed1edce79d3d979b2
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3080309
Reviewed-by: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Kriti Sapra <1c59404b87eeb378020e678403b339de83991e1f@google.com>

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