GitLab

Breaks up the UNKNOWN_ERROR enum into 3 enums:
1) UNKNOWN_ERROR, which precisely captures when the host returns an
   UNKNOWN_ERROR response code.
2) NO_RESPONSE, which captures when the client never received a response at
   all. This likely indicates a Bluetooth error.
3) INVALID_HOTSPOT_CREDENTIALS, which captures when the host returns a SUCCESS
   response, but with invalid SSID or password info.

Bug: 785514
Change-Id: I0d40283d8b458dd45a1d490fb53eb075e2eb05e4
Reviewed-on: https://chromium-review.googlesource.com/1011595
Commit-Queue: Ryan Hansberry <hansberry@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Reviewed-by: Jeremy Klein <jlklein@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550719}