Replaced PassRefPtr copies with moves in unit tests.

Replaced PassRefPtr copies with moves in unit tests.

Part of making PassRefPtr move only, in preparation for the removal of
PassRefPtr.

BUG=640449
Committed: https://crrev.com/e2743001ba2a1d60bcac4f1690b3cfbd86d92b0a
Cr-Commit-Position: refs/heads/master@{#426269}

[Bugs Nash, 2016-10-19 04:27:48]

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

[commit-bot: I haz the power, 2016-10-19 04:29:22]

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

[Bugs Nash, 2016-10-19 04:31:48]

bugsnash@chromium.org changed reviewers:
+ haraken@chromium.org, yutak@chromium.org

[Bugs Nash, 2016-10-19 04:33:07]

This fixes the errors found from running webkit_unit_tests and
blink_platform_unittests. I believe that is exhaustive for blink tests, please
let me know if I am missing some!

[Yuta Kitamura, 2016-10-19 06:07:55]

lgtm

[haraken, 2016-10-19 08:39:33]

LGTM

[commit-bot: I haz the power, 2016-10-19 12:13:09]

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

[commit-bot: I haz the power, 2016-10-19 12:13:10]

Dry run: This issue passed the CQ dry run.

[Bugs Nash, 2016-10-19 20:16:45]

The CQ bit was checked by bugsnash@chromium.org

[commit-bot: I haz the power, 2016-10-19 20:17:22]

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, 2016-10-19 20:28:09]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-21 13:11:00]

Description was changed from

==========
Replaced PassRefPtr copies with moves in unit tests.

Part of making PassRefPtr move only, in preparation for the removal of
PassRefPtr.

BUG=640449
==========

to

==========
Replaced PassRefPtr copies with moves in unit tests.

Part of making PassRefPtr move only, in preparation for the removal of
PassRefPtr.

BUG=640449

Committed: https://crrev.com/e2743001ba2a1d60bcac4f1690b3cfbd86d92b0a
Cr-Commit-Position: refs/heads/master@{#426269}
==========

[commit-bot: I haz the power, 2016-10-21 13:11:02]

Patchset 1 (id:??) landed as
https://crrev.com/e2743001ba2a1d60bcac4f1690b3cfbd86d92b0a
Cr-Commit-Position: refs/heads/master@{#426269}