Update Chromium to use timegm()

This is now available in bionic. See
https://android-git.corp.google.com/g/83410

This change is largely a revert of
https://android-git.corp.google.com/g/77645

Bug: 3156155
Change-Id: I8c2bd6967c8660bca1bdd6c46965f5334bb07058
1 file changed