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This change moves our basic test resources over to wpt/ so that we can
start migrating our Layout Tests to be Web Platform Tests.

BUG=509038

Change-Id: I6c0f8038eed8a03f22c10b24031b8d8e82f082c2
Reviewed-on: https://chromium-review.googlesource.com/691415
Commit-Queue: Conley Owens <cco3@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Reviewed-by: Vincent Scheib <scheib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524779}