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Also update the documentation.

Bug: 978103, 898684
Change-Id: I412fa68addac0327c7632d83a90606f99e6ebc31
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1680974Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#673418}