Add DCHECK when service handler is missing

Add DCHECK when service handler is missing

At this point we've already verified that the service exists and that the client
is allowed to connect, so failure to create the service indicates a bug in its
setup (i.e. it wasn't registered properly).

BUG=694807
Review-Url: https://codereview.chromium.org/2716513002
Cr-Commit-Position: refs/heads/master@{#452344}
Committed: https://chromium.googlesource.com/chromium/src/+/afa4a1208478bdad5d47151e1248eb14571aa942

[tibell, 2017-02-22 23:51:14]

The CQ bit was checked by tibell@chromium.org to run a CQ dry run

[tibell, 2017-02-22 23:51:36]

tibell@chromium.org changed reviewers:
+ rockot@chromium.org

[commit-bot: I haz the power, 2017-02-22 23:52:04]

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

[Ken Rockot(use gerrit already), 2017-02-23 00:26:16]

lgtm

[commit-bot: I haz the power, 2017-02-23 01:52:22]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-02-23 01:52:23]

Dry run: This issue passed the CQ dry run.

[tibell, 2017-02-23 01:54:39]

The CQ bit was checked by tibell@chromium.org

[commit-bot: I haz the power, 2017-02-23 01:55:08]

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, 2017-02-23 01:59:29]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1487814879074500, "parent_rev":
"245f16448e3b512a18bf9d7e579e5a6c8768c35d", "commit_rev":
"afa4a1208478bdad5d47151e1248eb14571aa942"}

[commit-bot: I haz the power, 2017-02-23 02:00:07]

Description was changed from

==========
Add DCHECK when service handler is missing

At this point we've already verified that the service exists and that the client
is allowed to connect, so failure to create the service indicates a bug in its
setup (i.e. it wasn't registered properly).

BUG=694807
==========

to

==========
Add DCHECK when service handler is missing

At this point we've already verified that the service exists and that the client
is allowed to connect, so failure to create the service indicates a bug in its
setup (i.e. it wasn't registered properly).

BUG=694807

Review-Url: https://codereview.chromium.org/2716513002
Cr-Commit-Position: refs/heads/master@{#452344}
Committed:
https://chromium.googlesource.com/chromium/src/+/afa4a1208478bdad5d47151e1248...
==========

[commit-bot: I haz the power, 2017-02-23 02:00:08]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/afa4a1208478bdad5d47151e1248...