[CFI] Move CFI flags to use buildflags
Splitting this refactor out from crrev.com/c/706859 to avoid confusing
it with unrelated buildflags. Change CFI flags to use the buildflag
system instead of manually defining flags which has the advantage of
eliminating typo errors in flags checks.
Bug: 771365
Change-Id: Ia2c48efe7974af314b8cac53ba36a2624a9d5428
Reviewed-on: https://chromium-review.googlesource.com/714385
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Brett Wilson <brettw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#508778}
CrOS-Libchrome-Original-Commit: e0408ff1171f3429e3826fb07e65fe03eb2f4e4a
2 files changed