The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/a419958d596326d05ebb55d4e751816e3fde8056

commit a419958d596326d05ebb55d4e751816e3fde8056
Author: Peter Kotwicz <pkotwicz@chromium.org>
Date: Wed May 31 19:55:07 2017

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/a419958d596326d05ebb55d4e751816e3fde8056

commit a419958d596326d05ebb55d4e751816e3fde8056
Author: Peter Kotwicz <pkotwicz@chromium.org>
Date: Wed May 31 19:55:07 2017

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/350dec11aa57a706e8a963c117aa5b93db8e3de9

commit 350dec11aa57a706e8a963c117aa5b93db8e3de9
Author: Peter Kotwicz <pkotwicz@chromium.org>
Date: Fri Jun 02 20:22:45 2017

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0a73bd712e140cc2307ec379d364533b653962e6

commit 0a73bd712e140cc2307ec379d364533b653962e6
Author: pkotwicz <pkotwicz@chromium.org>
Date: Thu Jun 08 19:34:11 2017

[Android WebAPK] Add UMA histogram to record error code when install fails pt 2/3

This CL adds a new UMA histogram WebApk.Install.GooglePlayInstallErrorCode to
record the error code when a WebAPK install fails.

The metric is temporary. Once we know which error codes are of interest, we will
add new enum entries to WebApkGooglePlayInstallResult.

BUG= 727893 
R=hanxi,dominickn,isherman
TBR=yfriedman for WebApkUma.java

Review-Url: https://codereview.chromium.org/2910313002
Cr-Commit-Position: refs/heads/master@{#478054}

[modify] https://crrev.com/0a73bd712e140cc2307ec379d364533b653962e6/chrome/android/java/src/org/chromium/chrome/browser/metrics/WebApkUma.java
[modify] https://crrev.com/0a73bd712e140cc2307ec379d364533b653962e6/chrome/android/java/src/org/chromium/chrome/browser/webapps/GooglePlayWebApkInstallDelegate.java
[modify] https://crrev.com/0a73bd712e140cc2307ec379d364533b653962e6/tools/metrics/histograms/histograms.xml

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/45e78552843f5afc5fca70e3647d689ea581e0e2

commit 45e78552843f5afc5fca70e3647d689ea581e0e2
Author: Peter Kotwicz <pkotwicz@chromium.org>
Date: Mon Jun 12 19:06:37 2017

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/clank/internal/apps/+/d7a9965def10c56d8190c5c43bf39cceb5cf7b9f

commit d7a9965def10c56d8190c5c43bf39cceb5cf7b9f
Author: Peter Kotwicz <pkotwicz@chromium.org>
Date: Mon Jun 12 20:33:20 2017