Add a JUnit test rule for clearing app data prior to testing.

Add a JUnit test rule for clearing app data prior to testing.

Having a test rule for clearing app data allows us to use RuleChain to ensure
we clear app data before initializing the browser process. Currently, many
chrome/browser tests that use ApplicationData.clearAppData are flaky because
of a race condition between clearing app data and initializing the browser.

BUG=737610
Review-Url: https://codereview.chromium.org/2962893002
Cr-Commit-Position: refs/heads/master@{#483136}
Committed: https://chromium.googlesource.com/chromium/src/+/054a0dccede86d525f94d516285e79adde6fe6f1

[troyhildebrandt, 2017-06-28 16:54:57]

Description was changed from

==========
Add a JUnit test rule for clearing app data prior to testing.

Having a test rule for clearing app data allows us to use RuleChain to ensure
we clear app data before initializing the browser process. Currently, many
chrome/browser tests that use ApplicationData.clearAppData are flaky because
of a race condition between clearing app data and initializing the browser.

BUG=737610
==========

to

==========
Add a JUnit test rule for clearing app data prior to testing.

Having a test rule for clearing app data allows us to use RuleChain to ensure
we clear app data before initializing the browser process. Currently, many
chrome/browser tests that use ApplicationData.clearAppData are flaky because
of a race condition between clearing app data and initializing the browser.

BUG=737610
==========

[troyhildebrandt, 2017-06-28 16:54:57]

thildebr@chromium.org changed reviewers:
+ tedchoc@chromium.org

[Ted C, 2017-06-28 17:07:36]

lgtm

[troyhildebrandt, 2017-06-28 17:09:26]

The CQ bit was checked by thildebr@chromium.org

[commit-bot: I haz the power, 2017-06-28 17:09:46]

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, 2017-06-28 18:37:54]

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

[commit-bot: I haz the power, 2017-06-28 18:37:55]

Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[troyhildebrandt, 2017-06-28 18:48:04]

The CQ bit was checked by thildebr@chromium.org

[commit-bot: I haz the power, 2017-06-28 18:48:42]

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, 2017-06-28 21:01:53]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1498675684761630,
"parent_rev": "42aa7a0db08026fb855ba06fed2467fb96e923a3", "commit_rev":
"054a0dccede86d525f94d516285e79adde6fe6f1"}

[commit-bot: I haz the power, 2017-06-28 21:02:10]

Description was changed from

==========
Add a JUnit test rule for clearing app data prior to testing.

Having a test rule for clearing app data allows us to use RuleChain to ensure
we clear app data before initializing the browser process. Currently, many
chrome/browser tests that use ApplicationData.clearAppData are flaky because
of a race condition between clearing app data and initializing the browser.

BUG=737610
==========

to

==========
Add a JUnit test rule for clearing app data prior to testing.

Having a test rule for clearing app data allows us to use RuleChain to ensure
we clear app data before initializing the browser process. Currently, many
chrome/browser tests that use ApplicationData.clearAppData are flaky because
of a race condition between clearing app data and initializing the browser.

BUG=737610

Review-Url: https://codereview.chromium.org/2962893002
Cr-Commit-Position: refs/heads/master@{#483136}
Committed:
https://chromium.googlesource.com/chromium/src/+/054a0dccede86d525f94d516285e...
==========

[commit-bot: I haz the power, 2017-06-28 21:02:12]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/054a0dccede86d525f94d516285e...