Add base::test::ScopedTaskEnvironment::RunUntilIdle().

Add base::test::ScopedTaskEnvironment::RunUntilIdle().

This method runs tasks on the main thread until no main thread
or TaskScheduler undelayed tasks remain.

R=gab@chromium.org,robliao@chromium.org
BUG=708584
Review-Url: https://codereview.chromium.org/2868093002
Cr-Commit-Position: refs/heads/master@{#470537}
Committed: https://chromium.googlesource.com/chromium/src/+/f2b4d8358e465e016829cde71d11b736a105770d

[fdoray, 2017-05-09 17:24:24]

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

[fdoray, 2017-05-09 17:24:59]

PTAL

[commit-bot: I haz the power, 2017-05-09 17:25:28]

Dry run: CQ is trying da patch.

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

[gab, 2017-05-09 18:49:58]

lgtm

[fdoray, 2017-05-09 19:04:41]

The CQ bit was unchecked by fdoray@chromium.org

[fdoray, 2017-05-09 19:04:44]

The CQ bit was checked by fdoray@chromium.org

[commit-bot: I haz the power, 2017-05-09 19:05:29]

CQ is trying da patch.

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

[robliao, 2017-05-09 21:52:52]

lgtm % nits

https://codereview.chromium.org/2868093002/diff/1/base/test/scoped_task_envir...
File base/test/scoped_task_environment.cc (right):

https://codereview.chromium.org/2868093002/diff/1/base/test/scoped_task_envir...
base/test/scoped_task_environment.cc:24: ran_task_ = true;
It would be more accurate to call this called_did_process_task_. There's no task
associated with this observer.

https://codereview.chromium.org/2868093002/diff/1/base/test/scoped_task_envir...
File base/test/scoped_task_environment.h (right):

https://codereview.chromium.org/2868093002/diff/1/base/test/scoped_task_envir...
base/test/scoped_task_environment.h:25: // RunLoop::Run(UntilIdle) or
ScopedTaskEnvironment::RunUntilIdle is called on
Nit: RunUntilIdle()

[commit-bot: I haz the power, 2017-05-10 02:19:38]

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

[commit-bot: I haz the power, 2017-05-10 02:19:39]

Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on master.tryserver.chromium.linux
(JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[fdoray, 2017-05-10 10:16:38]

The CQ bit was checked by fdoray@chromium.org

[commit-bot: I haz the power, 2017-05-10 10:17:16]

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, 2017-05-10 12:24:42]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1494411398198620, "parent_rev":
"faf8e1ebbc65063a01ada0f0c5ac8981076210cb", "commit_rev":
"f2b4d8358e465e016829cde71d11b736a105770d"}

[commit-bot: I haz the power, 2017-05-10 12:24:57]

Description was changed from

==========
Add base::test::ScopedTaskEnvironment::RunUntilIdle().

This method runs tasks on the main thread until no main thread
or TaskScheduler undelayed tasks remain.

R=gab@chromium.org,robliao@chromium.org
BUG=708584
==========

to

==========
Add base::test::ScopedTaskEnvironment::RunUntilIdle().

This method runs tasks on the main thread until no main thread
or TaskScheduler undelayed tasks remain.

R=gab@chromium.org,robliao@chromium.org
BUG=708584

Review-Url: https://codereview.chromium.org/2868093002
Cr-Commit-Position: refs/heads/master@{#470537}
Committed:
https://chromium.googlesource.com/chromium/src/+/f2b4d8358e465e016829cde71d11...
==========

[commit-bot: I haz the power, 2017-05-10 12:24:58]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/f2b4d8358e465e016829cde71d11...