Use ScopedTaskEnvironment instead of MessageLoop in google_apis unit tests.

Use ScopedTaskEnvironment instead of MessageLoop in google_apis unit tests.

ScopedTaskEnvironment allows usage of ThreadTaskRunnerHandle and
base/task_scheduler/post_task.h within its scope. It should be
instantiated in every unit test that uses either of these APIs
(i.e. no test should instantiate a MessageLoop directly).

Motivation for ScopedTaskEnvironment can be found in:
https://docs.google.com/document/d/1QabRo8c7D9LsYY3cEcaPQbOCLo8Tu-6VLykYXyl3Pkk/edit

BUG=708584
R=gab@chromium.org
TBR=zelidrag@chromium.org

Review-Url: https://codereview.chromium.org/2801643003
Cr-Commit-Position: refs/heads/master@{#462488}
Committed: https://chromium.googlesource.com/chromium/src/+/45aec822b4a648ab6bd9b541e5d85681e5b87d62

[fdoray, 2017-04-05 19:45:12]

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

[fdoray, 2017-04-05 19:45:14]

gab@: PTAL

The change will then be TBRed to the owner.

[commit-bot: I haz the power, 2017-04-05 19:45:39]

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

[gab, 2017-04-05 20:54:34]

lgtm

[commit-bot: I haz the power, 2017-04-05 21:07:52]

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

[commit-bot: I haz the power, 2017-04-05 21:07:53]

Dry run: This issue passed the CQ dry run.

[fdoray, 2017-04-06 15:29:33]

The CQ bit was checked by fdoray@chromium.org

[commit-bot: I haz the power, 2017-04-06 15:30:09]

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, 2017-04-06 15:40:22]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491492573714560, "parent_rev":
"de15564077790f0f8263f167289cdcbfea4faf1f", "commit_rev":
"45aec822b4a648ab6bd9b541e5d85681e5b87d62"}

[commit-bot: I haz the power, 2017-04-06 15:41:09]

Description was changed from

==========
Use ScopedTaskEnvironment instead of MessageLoop in google_apis unit tests.

ScopedTaskEnvironment allows usage of ThreadTaskRunnerHandle and
base/task_scheduler/post_task.h within its scope. It should be
instantiated in every unit test that uses either of these APIs
(i.e. no test should instantiate a MessageLoop directly).

Motivation for ScopedTaskEnvironment can be found in:
https://docs.google.com/document/d/1QabRo8c7D9LsYY3cEcaPQbOCLo8Tu-6VLykYXyl3P...

BUG=708584
R=gab@chromium.org
TBR=zelidrag@chromium.org
==========

to

==========
Use ScopedTaskEnvironment instead of MessageLoop in google_apis unit tests.

ScopedTaskEnvironment allows usage of ThreadTaskRunnerHandle and
base/task_scheduler/post_task.h within its scope. It should be
instantiated in every unit test that uses either of these APIs
(i.e. no test should instantiate a MessageLoop directly).

Motivation for ScopedTaskEnvironment can be found in:
https://docs.google.com/document/d/1QabRo8c7D9LsYY3cEcaPQbOCLo8Tu-6VLykYXyl3P...

BUG=708584
R=gab@chromium.org
TBR=zelidrag@chromium.org

Review-Url: https://codereview.chromium.org/2801643003
Cr-Commit-Position: refs/heads/master@{#462488}
Committed:
https://chromium.googlesource.com/chromium/src/+/45aec822b4a648ab6bd9b541e5d8...
==========

[commit-bot: I haz the power, 2017-04-06 15:41:09]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/45aec822b4a648ab6bd9b541e5d8...