[Cronet] Fix testDestroyUploadDataStreamAdapterOnSucceededCallback flake.

[Cronet] Fix testDestroyUploadDataStreamAdapterOnSucceededCallback flake.

This CL makes testDestroyUploadDataStreamAdapterOnSucceededCallback to
wait until the request finishes, so tearDown() can safely shut down the
CronetEngine.

BUG=635618
Committed: https://crrev.com/a3374c6c22d11e179773fbf1a89673f7e0a362e1
Cr-Commit-Position: refs/heads/master@{#411999}

[xunjieli, 2016-08-15 16:35:50]

The CQ bit was checked by xunjieli@chromium.org

[xunjieli, 2016-08-15 16:35:52]

The CQ bit was unchecked by xunjieli@chromium.org

[xunjieli, 2016-08-15 16:36:00]

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

[commit-bot: I haz the power, 2016-08-15 16:36:16]

Dry run: 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, 2016-08-15 16:47:53]

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

[commit-bot: I haz the power, 2016-08-15 16:47:54]

Dry run: Try jobs failed on following builders:
  linux_android_rel_ng on master.tryserver.chromium.android (JOB_FAILED,
https://build.chromium.org/p/tryserver.chromium.android/builders/linux_androi...)

[xunjieli, 2016-08-15 16:49:37]

Patchset #1 (id:1) has been deleted

[xunjieli, 2016-08-15 16:49:59]

xunjieli@chromium.org changed reviewers:
+ kapishnikov@chromium.org

[kapishnikov, 2016-08-15 16:55:05]

Good catch! LGTM

[xunjieli, 2016-08-15 17:50:30]

The CQ bit was checked by xunjieli@chromium.org

[commit-bot: I haz the power, 2016-08-15 17:51:00]

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, 2016-08-15 18:39:36]

Committed patchset #1 (id:20001)

[commit-bot: I haz the power, 2016-08-15 18:46:00]

Description was changed from

==========
[Cronet] Fix testDestroyUploadDataStreamAdapterOnSucceededCallback flake.

This CL makes testDestroyUploadDataStreamAdapterOnSucceededCallback to
wait until the request finishes, so tearDown() can safely shut down the
CronetEngine.

BUG=635618
==========

to

==========
[Cronet] Fix testDestroyUploadDataStreamAdapterOnSucceededCallback flake.

This CL makes testDestroyUploadDataStreamAdapterOnSucceededCallback to
wait until the request finishes, so tearDown() can safely shut down the
CronetEngine.

BUG=635618

Committed: https://crrev.com/a3374c6c22d11e179773fbf1a89673f7e0a362e1
Cr-Commit-Position: refs/heads/master@{#411999}
==========

[commit-bot: I haz the power, 2016-08-15 18:46:01]

Patchset 1 (id:??) landed as
https://crrev.com/a3374c6c22d11e179773fbf1a89673f7e0a362e1
Cr-Commit-Position: refs/heads/master@{#411999}