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The SDK was updated to 11.1 in crrev.com/844553. This updates the build
script to match

Bug: 1168134
Change-Id: Ia9054b5b49e7f24bc9135ccd6024e3c8af8cd518
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2637477
Commit-Queue: Hans Wennborg <hans@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844775}