Only send distillability message on valid pipe

Only send distillability message on valid pipe

For the remaining cases where the renderer tries to connect
to a nonexistent DistillabilityService, make sure the connection
was successful before sending a message.

BUG=661417
Review-Url: https://codereview.chromium.org/2469803002
Cr-Commit-Position: refs/heads/master@{#441700}
Committed: https://chromium.googlesource.com/chromium/src/+/98a412efa58cb8aa48d70b473c38bce2cd6391ea

[mdjones, 2017-01-04 18:57:49]

Description was changed from

==========
Only send distillability message on valid pipe

BUG=
==========

to

==========
Only send distillability message on valid pipe

For the remaining cases where the renderer tries to connect
to a nonexistent DistillabilityService, make sure the connection
was successful before sending a message.

BUG=661417
==========

[mdjones, 2017-01-04 18:57:50]

mdjones@chromium.org changed reviewers:
+ wychen@chromium.org

[mdjones, 2017-01-04 18:58:06]

ptal

[wychen, 2017-01-05 02:09:51]

lgtm

[mdjones, 2017-01-05 16:48:01]

The CQ bit was checked by mdjones@chromium.org

[commit-bot: I haz the power, 2017-01-05 16:48:29]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-05 18:00:31]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1483634881958840, "parent_rev":
"3ab02e253dc9e89b6e5c6b7bf415528a5e658066", "commit_rev":
"98a412efa58cb8aa48d70b473c38bce2cd6391ea"}

[commit-bot: I haz the power, 2017-01-05 18:01:02]

Description was changed from

==========
Only send distillability message on valid pipe

For the remaining cases where the renderer tries to connect
to a nonexistent DistillabilityService, make sure the connection
was successful before sending a message.

BUG=661417
==========

to

==========
Only send distillability message on valid pipe

For the remaining cases where the renderer tries to connect
to a nonexistent DistillabilityService, make sure the connection
was successful before sending a message.

BUG=661417

Review-Url: https://codereview.chromium.org/2469803002
Cr-Commit-Position: refs/heads/master@{#441700}
Committed:
https://chromium.googlesource.com/chromium/src/+/98a412efa58cb8aa48d70b473c38...
==========

[commit-bot: I haz the power, 2017-01-05 18:01:03]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/98a412efa58cb8aa48d70b473c38...