[blink] Remove XMLViewer.js/css post blink-in-js migration of XML tree viewer.

[blink] Remove XMLViewer.js/css post blink-in-js migration of XML tree viewer.

CL, https://codereview.chromium.org/479753003, migrated the usage of XML tree viewer to
be implemented in blink-in-js. Post the migration, the files XMLViewer.js/css are no longer
used by any native code directly and hence should be removed.

TBR=jochen@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181380

[vivekg, 2014-09-03 19:02:44]

vivekg@chromium.org changed reviewers:
+ jochen@chromium.org

[vivekg, 2014-09-03 19:03:54]

vivekg@chromium.org changed reviewers:
+ vivekg@chromium.org

[vivekg, 2014-09-03 19:03:54]

PTAL, thanks!

[vivekg, 2014-09-04 08:02:25]

vivekg@chromium.org changed reviewers:
+ haraken@chromium.org

[haraken, 2014-09-04 08:05:28]

LGTM

[vivekg, 2014-09-04 08:08:58]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-09-04 08:09:34]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/539653002/1

[vivekg, 2014-09-04 08:21:53]

The CQ bit was unchecked by vivekg@chromium.org

[jochen (gone - plz use gerrit), 2014-09-04 08:41:44]

lgtm

[vivekg, 2014-09-04 15:29:00]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-09-04 15:29:26]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/539653002/1

[commit-bot: I haz the power, 2014-09-04 16:32:06]

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

[commit-bot: I haz the power, 2014-09-04 16:32:07]

Try jobs failed on following builders:
  linux_blink_rel on tryserver.blink
(http://build.chromium.org/p/tryserver.blink/builders/linux_blink_rel/builds/2...)

[vivekg, 2014-09-04 16:34:57]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2014-09-04 16:36:24]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/vivek.vg@samsung.com/539653002/1

[commit-bot: I haz the power, 2014-09-04 17:05:12]

Committed patchset #1 (id:1) as 181380