The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d87e25edb2924948b728832225c7097e5a8b9ef7

commit d87e25edb2924948b728832225c7097e5a8b9ef7
Author: Kyle Horimoto <khorimoto@google.com>
Date: Thu Feb 01 01:55:04 2018

[CrOS Tether] Add metrics for GATT connection success/failures.

This CL adds two metrics:
  (1) Success rate for GATT connection attempts.
  (2) Effective success rate for one or multiple connection attempts,
      using retries if a previous connection failed (up to the maximum
      number of retries).

These metrics aid in our ability to analyze what our effective
connection stability is.

Bug:  805219 , 672263
Change-Id: I407c3af03eb86ccc80807395e1f18a5bff2b71a4
Reviewed-on: https://chromium-review.googlesource.com/894445
Reviewed-by: Steven Holte <holte@chromium.org>
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#533521}
[modify] https://crrev.com/d87e25edb2924948b728832225c7097e5a8b9ef7/chromeos/components/tether/message_transfer_operation.cc
[modify] https://crrev.com/d87e25edb2924948b728832225c7097e5a8b9ef7/chromeos/components/tether/message_transfer_operation_unittest.cc
[modify] https://crrev.com/d87e25edb2924948b728832225c7097e5a8b9ef7/tools/metrics/histograms/histograms.xml

Pls apply appropriate OSs labels. Thank you.

Your change meets the bar and is auto-approved for M65. Please go ahead and merge the CL to branch 3325 manually. Please contact milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), bhthompson@(ChromeOS), govind@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d5c1d13765451be5c321ad78a06cf39001b6427a

commit d5c1d13765451be5c321ad78a06cf39001b6427a
Author: Kyle Horimoto <khorimoto@google.com>
Date: Fri Feb 02 19:16:09 2018

[CrOS Tether] Add metrics for GATT connection success/failures.

This CL adds two metrics:
  (1) Success rate for GATT connection attempts.
  (2) Effective success rate for one or multiple connection attempts,
      using retries if a previous connection failed (up to the maximum
      number of retries).

These metrics aid in our ability to analyze what our effective
connection stability is.

TBR=khorimoto@google.com

(cherry picked from commit d87e25edb2924948b728832225c7097e5a8b9ef7)

Bug:  805219 , 672263
Change-Id: I407c3af03eb86ccc80807395e1f18a5bff2b71a4
Reviewed-on: https://chromium-review.googlesource.com/894445
Reviewed-by: Steven Holte <holte@chromium.org>
Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#533521}
Reviewed-on: https://chromium-review.googlesource.com/899910
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/branch-heads/3325@{#265}
Cr-Branched-From: bc084a8b5afa3744a74927344e304c02ae54189f-refs/heads/master@{#530369}
[modify] https://crrev.com/d5c1d13765451be5c321ad78a06cf39001b6427a/chromeos/components/tether/message_transfer_operation.cc
[modify] https://crrev.com/d5c1d13765451be5c321ad78a06cf39001b6427a/chromeos/components/tether/message_transfer_operation_unittest.cc
[modify] https://crrev.com/d5c1d13765451be5c321ad78a06cf39001b6427a/tools/metrics/histograms/histograms.xml