As it follows from https://github.com/w3c/sensors/issues/313

Change-Id: Ic81e118b2a3c8db6d8b30ee61ef8811b88a0f970
Reviewed-on: https://chromium-review.googlesource.com/721742
Reviewed-by: Reilly Grant <[email protected]>
Reviewed-by: Kentaro Hara <[email protected]>
Commit-Queue: Mikhail Pozdnyakov <[email protected]>
Cr-Commit-Position: refs/heads/master@{#509707}