[DevTools] Clarify checkboxes' tooltips in Application>Service Worker
[DevTools] Clarify checkboxes' tooltips in Application>Service Worker

1. 'Update on reload': be more informative + do not capitalize
   'Service Worker'
2. 'Bypass for network': do not capitalize 'Service Worker'
About captialization: we should be be consistent with the tooltip in the
'unregister' buttons in the service worker list below, and be consistent
with our documentation articles.

Change-Id: I25e6db4bba16648abfe69e9dd28730d2b268020a
Bug: 920193
Reviewed-on: https://chromium-review.googlesource.com/c/1405975
Reviewed-by: Erik Luo <26192f5e05d23e5ee959014fb911d780e566545b@chromium.org>
Commit-Queue: Haihong Li (Harley) <9cb4eae756ad117d277e87e55452ee4270dafbc5@chromium.org>
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#621782}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f640aa60b830b818df6be43197a82aa51e8535c9
ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend