GitLab

Undefined keychain types are now defined in the iOS12 SDK, and
annotated as unavailable on iOS.  Remove the types that aren't used by
mac or ios, and redefine the ones used by mac so it can be typedef-ed
away on ios.

Bug: 843234
Change-Id: If94222cde31a89185ce2f9bd6d77af8ac7c41fd7
Reviewed-on: https://chromium-review.googlesource.com/1087927
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Misha Efimov <mef@chromium.org>
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#564926}