WebUI: Add helper scripts for referring to node and node_modules paths.

WebUI: Add helper scripts for referring to node and node_modules paths.

BUG=673825

[dpapad, 2017-01-20 01:48:15]

dpapad@chromium.org changed reviewers:
+ dbeam@chromium.org

[dpapad, 2017-01-20 01:48:15]

Per suggestion at https://codereview.chromium.org/2569283002, moved those two
files to a separate CL and addressed comments.

[dpapad, 2017-01-20 01:53:01]

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

[commit-bot: I haz the power, 2017-01-20 01:53:55]

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, 2017-01-20 02:38:02]

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

[commit-bot: I haz the power, 2017-01-20 02:38:02]

Dry run: This issue passed the CQ dry run.

[Dan Beam, 2017-01-21 01:06:47]

Description was changed from

==========
WebUI: Add helper scripts for referring to node and node_modules paths.

BUG=673825
==========

to

==========
WebUI: Add helper scripts for referring to node and node_modules paths.

BUG=673825
==========