Use task id to determine if Preferences should be finished

Use task id to determine if Preferences should be finished

Use the taskId rather to determine if finish() should be called
on Preferences. Previously, if a user navigated in Preferences,
sResumedInstance got set to the sub-Preference and the main
Preference got finished. Since they belong to the same task, this
shouldn't happen.

BUG=652572
Committed: https://crrev.com/0bf2743d7bc9a79573e15419dcb88ed111ff905b
Cr-Commit-Position: refs/heads/master@{#422862}

[Theresa, 2016-10-04 17:33:50]

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

[Theresa, 2016-10-04 17:34:20]

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

[Theresa, 2016-10-04 17:34:21]

ptal

[commit-bot: I haz the power, 2016-10-04 17:34:28]

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

[Ted C, 2016-10-04 17:40:33]

lgtm

[commit-bot: I haz the power, 2016-10-04 18:09:33]

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

[commit-bot: I haz the power, 2016-10-04 18:09:34]

Dry run: This issue passed the CQ dry run.

[Theresa, 2016-10-04 18:18:02]

The CQ bit was checked by twellington@chromium.org

[commit-bot: I haz the power, 2016-10-04 18:18:32]

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, 2016-10-04 18:24:31]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-04 18:27:47]

Description was changed from

==========
Use task id to determine if Preferences should be finished

Use the taskId rather to determine if finish() should be called
on Preferences. Previously, if a user navigated in Preferences,
sResumedInstance got set to the sub-Preference and the main
Preference got finished. Since they belong to the same task, this
shouldn't happen.

BUG=652572
==========

to

==========
Use task id to determine if Preferences should be finished

Use the taskId rather to determine if finish() should be called
on Preferences. Previously, if a user navigated in Preferences,
sResumedInstance got set to the sub-Preference and the main
Preference got finished. Since they belong to the same task, this
shouldn't happen.

BUG=652572

Committed: https://crrev.com/0bf2743d7bc9a79573e15419dcb88ed111ff905b
Cr-Commit-Position: refs/heads/master@{#422862}
==========

[commit-bot: I haz the power, 2016-10-04 18:27:48]

Patchset 1 (id:??) landed as
https://crrev.com/0bf2743d7bc9a79573e15419dcb88ed111ff905b
Cr-Commit-Position: refs/heads/master@{#422862}