WebUI Polymer 2: Stop including Polymer 1 on non-CrOS builds.

Bug: 944281
Change-Id: Id3d6bbe50a5433384a6f10a5ed480c86d89c7b06
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1582776
Auto-Submit: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653838}
1 file changed