cache_invalidation: Restrict background services only on O.

cache_invalidation: Restrict background services only on O.

Starting/Stoping the invalidation client requires starting a service
which should be gated on O builds only. Since the current check uses
isGreaterThanN, which is still true for certain N builds, use
isGreaterThanO instead.

BUG=706956
Review-Url: https://codereview.chromium.org/2790703002
Cr-Commit-Position: refs/heads/master@{#460864}
(cherry picked from commit faa4d68dd2fec796031ce483ef8aed4929bef34c)

Review-Url: https://codereview.chromium.org/2792683002 .
Cr-Commit-Position: refs/branch-heads/3029@{#519}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/9266031a6c59f20cdab0e500ecc742a31695548a

[Khushal, 2017-03-31 21:31:00]

Description was changed from

==========
cache_invalidation: Restrict background services only on O.

Starting/Stoping the invalidation client requires starting a service
which should be gated on O builds only. Since the current check uses
isGreaterThanN, which is still true for certain N builds, use
isGreaterThanO instead.

BUG=706956

Review-Url: https://codereview.chromium.org/2790703002
Cr-Commit-Position: refs/heads/master@{#460864}
(cherry picked from commit faa4d68dd2fec796031ce483ef8aed4929bef34c)
==========

to

==========
cache_invalidation: Restrict background services only on O.

Starting/Stoping the invalidation client requires starting a service
which should be gated on O builds only. Since the current check uses
isGreaterThanN, which is still true for certain N builds, use
isGreaterThanO instead.

BUG=706956

Review-Url: https://codereview.chromium.org/2790703002
Cr-Commit-Position: refs/heads/master@{#460864}
(cherry picked from commit faa4d68dd2fec796031ce483ef8aed4929bef34c)

Review-Url: https://codereview.chromium.org/2792683002 .
Cr-Commit-Position: refs/branch-heads/3029@{#519}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/9266031a6c59f20cdab0e500ecc7...
==========

[Khushal, 2017-03-31 21:31:02]

Committed patchset #1 (id:1) manually as
9266031a6c59f20cdab0e500ecc742a31695548a.