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This CL creates a subdirectory sms under:
//chrome/browser/ui/android/
and moves sms related files into this subdirectory.

This CL also adds OWNERS files for this subdirectory.

Bug: None
Change-Id: I88fab6f685b7cd2a0e55787dbfb161eadfaa6fb3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1718994Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Ayu Ishii <ayui@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Jun Cai <juncai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#681171}