Use node() when generating element id's

Use node() when generating element id's

The current code followed the lead of crrev.com/279553002 and
incorrectly used generatingNode, which lead to discrepancies
when animating pseudo elements. It seems that node() is the
correct choice, both here and in the CL I referenced.

BUG=626571
Review-Url: https://codereview.chromium.org/2141743002
Cr-Commit-Position: refs/heads/master@{#404921}
(cherry picked from commit 10b3fec07dfda5c362f1fc27a314468541c72ae0)

Committed: https://chromium.googlesource.com/chromium/src/+/8b49a371fb95d08b33bd3d35ac87e41186ff19de

[Ian Vollick, 2016-07-15 18:34:35]

Description was changed from

==========
Use node() when generating element id's

The current code followed the lead of crrev.com/279553002 and
incorrectly used generatingNode, which lead to discrepancies
when animating pseudo elements. It seems that node() is the
correct choice, both here and in the CL I referenced.

BUG=626571

Review-Url: https://codereview.chromium.org/2141743002
Cr-Commit-Position: refs/heads/master@{#404921}
(cherry picked from commit 10b3fec07dfda5c362f1fc27a314468541c72ae0)
==========

to

==========
Use node() when generating element id's

The current code followed the lead of crrev.com/279553002 and
incorrectly used generatingNode, which lead to discrepancies
when animating pseudo elements. It seems that node() is the
correct choice, both here and in the CL I referenced.

BUG=626571

Review-Url: https://codereview.chromium.org/2141743002
Cr-Commit-Position: refs/heads/master@{#404921}
(cherry picked from commit 10b3fec07dfda5c362f1fc27a314468541c72ae0)

Committed:
https://chromium.googlesource.com/chromium/src/+/8b49a371fb95d08b33bd3d35ac87...
==========

[Ian Vollick, 2016-07-15 18:34:36]

Committed patchset #1 (id:1) manually as
8b49a371fb95d08b33bd3d35ac87e41186ff19de.