Walk the entire offsetParent chain in fast/forms/resources/common.js utility functions.

Walk the entire offsetParent chain in fast/forms/resources/common.js utility functions.

They used to assume that the only offsetParent was the root node, but that's no
longer going to be true when https://codereview.chromium.org/2328633003/ lands.
One test that calls searchCancelButtonPosition() is inside a transformed
element, which will become an offsetParent.

R=tkent@chromium.org

Committed: https://crrev.com/a7659ced0a27aec0d0f16932c94fce0453b91f73
Cr-Commit-Position: refs/heads/master@{#417893}

[mstensho (USE GERRIT), 2016-09-10 15:07:47]

The CQ bit was checked by mstensho@opera.com to run a CQ dry run

[commit-bot: I haz the power, 2016-09-10 15:07:49]

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, 2016-09-10 16:18:50]

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

[commit-bot: I haz the power, 2016-09-10 16:18:51]

Dry run: This issue passed the CQ dry run.

[tkent, 2016-09-12 03:49:01]

lgtm

[mstensho (USE GERRIT), 2016-09-12 07:05:57]

The CQ bit was checked by mstensho@opera.com

[commit-bot: I haz the power, 2016-09-12 07:06:05]

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, 2016-09-12 08:18:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-12 08:19:59]

Description was changed from

==========
Walk the entire offsetParent chain in fast/forms/resources/common.js utility
functions.

They used to assume that the only offsetParent was the root node, but that's no
longer going to be true when https://codereview.chromium.org/2328633003/ lands.
One test that calls searchCancelButtonPosition() is inside a transformed
element, which will become an offsetParent.

R=tkent@chromium.org
==========

to

==========
Walk the entire offsetParent chain in fast/forms/resources/common.js utility
functions.

They used to assume that the only offsetParent was the root node, but that's no
longer going to be true when https://codereview.chromium.org/2328633003/ lands.
One test that calls searchCancelButtonPosition() is inside a transformed
element, which will become an offsetParent.

R=tkent@chromium.org

Committed: https://crrev.com/a7659ced0a27aec0d0f16932c94fce0453b91f73
Cr-Commit-Position: refs/heads/master@{#417893}
==========

[commit-bot: I haz the power, 2016-09-12 08:20:00]

Patchset 1 (id:??) landed as
https://crrev.com/a7659ced0a27aec0d0f16932c94fce0453b91f73
Cr-Commit-Position: refs/heads/master@{#417893}