Added vulcanize under third_party/npm_modules

Added vulcanize under third_party

This will allow the makefiles in sheriff-o-matic and chromium_rietveld
and other apps with polymer UIs to vulcanize without assuming that the
user has installed vulcanize manually.

BUG=

Committed: https://chromium.googlesource.com/infra/third_party/npm_modules/+/290075ca5207f7aa40a81141d7fd8bbe08e6a5c4

[Jason Robbins -- corp, 2014-12-19 20:14:25]

jrobbins@google.com changed reviewers:
+ agable@chromium.org, stip@chromium.org

[Jason Robbins -- corp, 2014-12-19 20:15:05]

jrobbins@google.com changed reviewers:
+ jrobbins@google.com

[Jason Robbins -- corp, 2014-12-19 20:15:09]

PTAL, when you get a chance.

[ojan, 2015-01-06 04:48:17]

FWIW, LGTM

[agable, 2015-01-07 00:16:13]

This CL and Sean's https://codereview.chromium.org/807103005 are just slightly
different. Any idea why?

[seanmccullough, 2015-01-07 00:34:09]

On 2015/01/07 00:16:13, agable wrote:
> This CL and Sean's https://codereview.chromium.org/807103005 are just slightly
> different. Any idea why?

According to node_modules/vulcanize/package.json my CL was vulcanize 0.7.3. 
This is 0.7.4.

[jrobbins, 2015-01-07 23:16:35]

On 2015/01/07 00:34:09, seanmccullough wrote:
> On 2015/01/07 00:16:13, agable wrote:
> > This CL and Sean's https://codereview.chromium.org/807103005 are just
slightly
> > different. Any idea why?
> 
> According to node_modules/vulcanize/package.json my CL was vulcanize 0.7.3. 
> This is 0.7.4.

So, should I go ahead and land this CL?
Sorry to not have seen your pending CL at the time.

[jrobbins, 2015-01-07 23:24:54]

The CQ bit was checked by jrobbins@chromium.org

[commit-bot: I haz the power, 2015-01-07 23:27:02]

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

[commit-bot: I haz the power, 2015-01-07 23:27:05]

Commit queue rejected this change because it did not recognize the base URL.
Please commit your change manually.

[jrobbins, 2015-01-07 23:30:59]

Committed patchset #1 (id:1) manually as
290075ca5207f7aa40a81141d7fd8bbe08e6a5c4 (presubmit successful).