For now, this functionality is gated behind a base::Feature that is
disabled by default.
This CL does *not* interact with SameSite semantics, and still
maintains that only SameSite=None cookies are allowed in ABA contexts.
This exception is for 3P cookie blocking only.
This exception cannot be applied to cookies accessed via JS.
Bug: 1513690
Change-Id: Id5964224403b7eb9aab69cebe69095530da5baa5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5147868
Reviewed-by: Caitlin Fischer <caitlinfischer@google.com>
Commit-Queue: Dylan Cutler <dylancutler@google.com>
Reviewed-by: Chris Fredrickson <cfredric@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1243468}