The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176

commit 8575dd76a6ceb99e0c87738d6ccc3db0c70d5176
Author: khmel <khmel@chromium.org>
Date: Thu Mar 30 21:43:13 2017

arc: Provide UMA for OptIn flow.

We have set of different UMAs for ARC that we can use to analyze how
OptIn flow passed. However there was no metric that explicitly
defines how OptIn finished. This adds top level metric that shows
how OptIn has finished.

BUG= 706564 
TEST=Various modes for managed/unmanaged users. chrome://histograms
     shows expected results.

Review-Url: https://codereview.chromium.org/2785813002
Cr-Commit-Position: refs/heads/master@{#460892}

[modify] https://crrev.com/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176/chrome/browser/chromeos/arc/arc_optin_uma.cc
[modify] https://crrev.com/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176/chrome/browser/chromeos/arc/arc_optin_uma.h
[modify] https://crrev.com/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176/chrome/browser/chromeos/arc/arc_session_manager.cc
[modify] https://crrev.com/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176/chrome/browser/chromeos/arc/arc_session_manager.h
[modify] https://crrev.com/8575dd76a6ceb99e0c87738d6ccc3db0c70d5176/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/895e748b018282644cf4678908124b0267011688

commit 895e748b018282644cf4678908124b0267011688
Author: khmel <khmel@chromium.org>
Date: Thu Mar 30 23:36:20 2017

[Merge M58] arc: Provide UMA for OptIn flow.

We have set of different UMAs for ARC that we can use to analyze how
OptIn flow passed. However there was no metric that explicitly
defines how OptIn finished. This adds top level metric that shows
how OptIn has finished.

NOTRY=true
NOPRESUBMIT=true
TBR=lhchavez@chromium.org,isherman@chromium.org

BUG= 706564 
TEST=Various modes for managed/unmanaged users. chrome://histograms
     shows expected results.

Review-Url: https://codereview.chromium.org/2785813002
Cr-Commit-Position: refs/heads/master@{#460892}
(cherry picked from commit 8575dd76a6ceb99e0c87738d6ccc3db0c70d5176)

Review-Url: https://codereview.chromium.org/2783423002
Cr-Commit-Position: refs/branch-heads/3029@{#501}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}

[modify] https://crrev.com/895e748b018282644cf4678908124b0267011688/chrome/browser/chromeos/arc/arc_optin_uma.cc
[modify] https://crrev.com/895e748b018282644cf4678908124b0267011688/chrome/browser/chromeos/arc/arc_optin_uma.h
[modify] https://crrev.com/895e748b018282644cf4678908124b0267011688/chrome/browser/chromeos/arc/arc_session_manager.cc
[modify] https://crrev.com/895e748b018282644cf4678908124b0267011688/chrome/browser/chromeos/arc/arc_session_manager.h
[modify] https://crrev.com/895e748b018282644cf4678908124b0267011688/tools/metrics/histograms/histograms.xml