flags: assign reader mode flags

This change assigns:
  enable-reader-mode-in-cct
  reader-mode-heuristics

to mdjones and bumps the expiration to M78 while we investigate whether to keep
these longer-term.

Bug: None
Change-Id: I717dac7bdabfb76ed456a2906f34244a62f67088
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628044
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#663269}
1 file changed