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This is a reland of 83ced150

Original change's description:
> [base] Introduce base::CheckedContiguousRange
> 
> This change introduces base::CheckedContiguousRange, which similarly to
> base::span is a light-weight wrapper around a contiguous container
> performing bound CHECKs.
> 
> However, in contrast to base::span this class keeps a pointer to the
> underlying container, and thus is able to respond to changes to data()
> and size(), which base::span can't do.
> 
> Furthermore, this change provides a constexpr overload of base::data()
> for std::array and fixes a bug in CheckedContiguousIterator::operator-=.
> 
> Bug: 990059
> 
> Change-Id: I3fef91c7ef7874bf495ac2ab6dbaf3a8b02dab35
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893858
> Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
> Reviewed-by: Chris Palmer <palmer@chromium.org>
> Reviewed-by: Daniel Cheng <dcheng@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#712120}

Bug: 990059
Change-Id: If7cfd16ca526930643e9fac7567f58ba9ef60b1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893069Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712493}