Merge to m56: Fix broken panel menus

Merge to m56: Fix broken panel menus

Regressed by
https://codereview.chromium.org/2443103004

The code missed the fact that |node| changes value outside of the Closure and so doesn't actually refer to the expected node (i.e. |node| is always the last node in the AX tree).

TEST=use the menus; press enter over an item and make sure things actually work.
BUG=671778
TBR=dtseng@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2556893002
Cr-Commit-Position: refs/heads/master@{#437009}
(cherry picked from commit f9c3cdff4cfb0c39f8bc6ced9faaed038804d23f)

Committed: https://chromium.googlesource.com/chromium/src/+/9d327e75089cac3ab510b434b763d81f67f0b74e

[David Tseng, 2016-12-12 18:58:56]

Description was changed from

==========
Merge to m56: Fix broken panel menus

Regressed by
https://codereview.chromium.org/2443103004

The code missed the fact that |node| changes value outside of the Closure and so
doesn't actually refer to the expected node (i.e. |node| is always the last node
in the AX tree).

TEST=use the menus; press enter over an item and make sure things actually work.
BUG=671778
TBR=dtseng@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2556893002
Cr-Commit-Position: refs/heads/master@{#437009}
(cherry picked from commit f9c3cdff4cfb0c39f8bc6ced9faaed038804d23f)
==========

to

==========
Merge to m56: Fix broken panel menus

Regressed by
https://codereview.chromium.org/2443103004

The code missed the fact that |node| changes value outside of the Closure and so
doesn't actually refer to the expected node (i.e. |node| is always the last node
in the AX tree).

TEST=use the menus; press enter over an item and make sure things actually work.
BUG=671778
TBR=dtseng@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2556893002
Cr-Commit-Position: refs/heads/master@{#437009}
(cherry picked from commit f9c3cdff4cfb0c39f8bc6ced9faaed038804d23f)

Committed:
https://chromium.googlesource.com/chromium/src/+/9d327e75089cac3ab510b434b763...
==========

[David Tseng, 2016-12-12 18:58:57]

Committed patchset #1 (id:1) manually as
9d327e75089cac3ab510b434b763d81f67f0b74e (presubmit successful).