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Most notably we'd like to include
https://github.com/w3c/web-platform-tests/pull/10599,
which added support for test variants in .any.js tests.

Other changes in this roll:
* Fixed paths in chromium.patch after the Blink mv.
* Added the new wptserve/config.py to the whitelist.

This roll also exposed an upstream issue. Filed issue
836377 to track it (fix is under way in the upstream).

Bug: 836276, 829697, 836377
Change-Id: I5fc0af49c0149871222eaacd1bf5473b187c38a5
Reviewed-on: https://chromium-review.googlesource.com/1026165
Commit-Queue: Robert Ma <robertma@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553324}