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The local device data updater builds and queues UpdateDevice RPC
requests. It uses the Nearby Share HTTP client to make the calls when
ready. It also enforces the specified timeout.

Bug: b/157685298
Change-Id: I27372ccfdb27307c5a048b4293a4eac005f61a40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2280581Reviewed-by: James Vecore <vecore@google.com>
Commit-Queue: Josh Nohle <nohle@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789725}