The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d281b332fd07c5053ee6bc796b59fde04e81eb3c

commit d281b332fd07c5053ee6bc796b59fde04e81eb3c
Author: Robert Kaplow <rkaplow@chromium.org>
Date: Wed Apr 11 02:13:55 2018

Add Android UKM test for browser history deletion

Bug:  804439 
Change-Id: If0c4941a8e9f0deb9205fbb06d33aa82e791a05d
Reviewed-on: https://chromium-review.googlesource.com/1000553
Commit-Queue: Robert Kaplow <rkaplow@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549727}
[add] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/android/java/src/org/chromium/chrome/browser/metrics/UkmUtilsForTest.java
[modify] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/android/java_sources.gni
[rename] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/android/javatests/src/org/chromium/chrome/browser/metrics/UkmTest.java
[modify] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/android/sync_shell/javatests/src/org/chromium/chrome/browser/sync/UkmTest.java
[modify] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/browser/BUILD.gn
[add] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/browser/android/metrics/ukm_utils_for_test.cc
[add] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/browser/android/metrics/ukm_utils_for_test.h
[modify] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/chrome/browser/metrics/ukm_browsertest.cc
[modify] https://crrev.com/d281b332fd07c5053ee6bc796b59fde04e81eb3c/components/ukm/ukm_recorder_impl.h