Add CreateTestWidget() to AshTestBase, collapse duplicates

Add CreateTestWidget() to AshTestBase, collapse duplicates

This eliminates several near-identical copies of this function.

BUG=none
TEST=ash_unittests

Committed: https://crrev.com/e5bbe9cb96c011975841d3895c574a9815b336db
Cr-Commit-Position: refs/heads/master@{#405501}

[James Cook, 2016-07-14 00:18:17]

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

[James Cook, 2016-07-14 00:18:32]

jamescook@chromium.org changed reviewers:
+ msw@chromium.org

[James Cook, 2016-07-14 00:18:33]

msw, please take a look.

[commit-bot: I haz the power, 2016-07-14 00:19:12]

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

[msw, 2016-07-14 00:26:51]

lgtm

[commit-bot: I haz the power, 2016-07-14 01:28:26]

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

[commit-bot: I haz the power, 2016-07-14 01:28:27]

Dry run: This issue passed the CQ dry run.

[James Cook, 2016-07-14 15:41:28]

The CQ bit was checked by jamescook@chromium.org

[James Cook, 2016-07-14 15:41:29]

The patchset sent to the CQ was uploaded after l-g-t-m from msw@chromium.org
Link to the patchset: https://codereview.chromium.org/2144003003/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2016-07-14 15:41:50]

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, 2016-07-14 16:22:15]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-07-14 16:22:27]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-07-14 16:23:20]

Description was changed from

==========
Add CreateTestWidget() to AshTestBase, collapse duplicates

This eliminates several near-identical copies of this function.

BUG=none
TEST=ash_unittests
==========

to

==========
Add CreateTestWidget() to AshTestBase, collapse duplicates

This eliminates several near-identical copies of this function.

BUG=none
TEST=ash_unittests

Committed: https://crrev.com/e5bbe9cb96c011975841d3895c574a9815b336db
Cr-Commit-Position: refs/heads/master@{#405501}
==========

[commit-bot: I haz the power, 2016-07-14 16:23:22]

Patchset 2 (id:??) landed as
https://crrev.com/e5bbe9cb96c011975841d3895c574a9815b336db
Cr-Commit-Position: refs/heads/master@{#405501}