Changes copied verbatim from Chromium with one exception to remove
Chromium specific gn args.
This includes a mini_chromium roll to not codesign within Xcode.
Change-Id: I89b35bee08f9bc9e37f902f2b57e02acb2113ae1
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3726509
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>