Adding RangesOverlap function to checked iterators.

Will be used when moving ranges using iterators.

Bug:817982
Change-Id: I4a202667154c516c4b84e50e0b485b4e2f029a5a

Change-Id: I4a202667154c516c4b84e50e0b485b4e2f029a5a
Reviewed-on: https://chromium-review.googlesource.com/c/1378095
Commit-Queue: Gabriela Melchior <gabimelchior@google.com>
Reviewed-by: Chris Palmer <palmer@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#618145}
5 files changed