The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/af7c1074aeb22e4757443a0c3f801b70c4e1e134

commit af7c1074aeb22e4757443a0c3f801b70c4e1e134
Author: Matthew Mourgos <mmourgos@chromium.org>
Date: Fri Jan 11 20:41:23 2019

cros: Add metric to track app list folder renames

Bug:  919939 
Change-Id: I4fcda789a4859dc826072fd8979ebce355a606ce
Reviewed-on: https://chromium-review.googlesource.com/c/1401661
Commit-Queue: Matthew Mourgos <mmourgos@chromium.org>
Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622131}
[modify] https://crrev.com/af7c1074aeb22e4757443a0c3f801b70c4e1e134/ash/app_list/views/app_list_folder_view.h
[modify] https://crrev.com/af7c1074aeb22e4757443a0c3f801b70c4e1e134/ash/app_list/views/apps_container_view.cc
[modify] https://crrev.com/af7c1074aeb22e4757443a0c3f801b70c4e1e134/ash/app_list/views/folder_header_view.cc
[modify] https://crrev.com/af7c1074aeb22e4757443a0c3f801b70c4e1e134/ash/app_list/views/folder_header_view.h
[modify] https://crrev.com/af7c1074aeb22e4757443a0c3f801b70c4e1e134/tools/metrics/histograms/histograms.xml