[Merge M-56] arc: Reduce logspam when ARC is not enabled/available

[Merge M-56] arc: Reduce logspam when ARC is not enabled/available

There are some Chrome services that unconditionally try to call ARC
code, and the latter will print stuff to the log if it's not enabled or
avilable (yet). This change ensures that we only attempt to contact ARC
when it is actually ready for the most chatty services: net and process.

BUG=654038
TEST=Opted out of ARC, did not see any logs
TBR=yusukes@chromium.org

Review-Url: https://codereview.chromium.org/2541843003
Cr-Commit-Position: refs/heads/master@{#435534}
(cherry picked from commit edea73c00927636fe885af9205c668633e65a691)

Committed: https://chromium.googlesource.com/chromium/src/+/26ed24fd38f8c2b64ced3d3bb61ac04686d698ba

[Luis Héctor Chávez, 2016-12-05 17:26:14]

Description was changed from

==========
[Merge M-56] arc: Reduce logspam when ARC is not enabled/available

There are some Chrome services that unconditionally try to call ARC
code, and the latter will print stuff to the log if it's not enabled or
avilable (yet). This change ensures that we only attempt to contact ARC
when it is actually ready for the most chatty services: net and process.

BUG=654038
TEST=Opted out of ARC, did not see any logs
TBR=yusukes@chromium.org

Review-Url: https://codereview.chromium.org/2541843003
Cr-Commit-Position: refs/heads/master@{#435534}
(cherry picked from commit edea73c00927636fe885af9205c668633e65a691)
==========

to

==========
[Merge M-56] arc: Reduce logspam when ARC is not enabled/available

There are some Chrome services that unconditionally try to call ARC
code, and the latter will print stuff to the log if it's not enabled or
avilable (yet). This change ensures that we only attempt to contact ARC
when it is actually ready for the most chatty services: net and process.

BUG=654038
TEST=Opted out of ARC, did not see any logs
TBR=yusukes@chromium.org

Review-Url: https://codereview.chromium.org/2541843003
Cr-Commit-Position: refs/heads/master@{#435534}
(cherry picked from commit edea73c00927636fe885af9205c668633e65a691)

Committed:
https://chromium.googlesource.com/chromium/src/+/26ed24fd38f8c2b64ced3d3bb61a...
==========

[Luis Héctor Chávez, 2016-12-05 17:26:15]

Committed patchset #1 (id:1) manually as
26ed24fd38f8c2b64ced3d3bb61ac04686d698ba (presubmit successful).