The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1fe6772a6a709b035733b290154f7c36fac74e68

commit 1fe6772a6a709b035733b290154f7c36fac74e68
Author: Wenzhao Zang <wzang@chromium.org>
Date: Wed Mar 07 05:31:23 2018

cros: Deprecate prefs::kCurrentWallpaperAppName

TBR=bshe@chromium.org

Bug:  817178 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Idc89e97f8e3825798ddb76cb3fcb365391acdb3d
Reviewed-on: https://chromium-review.googlesource.com/940663
Commit-Queue: Wenzhao (Colin) Zang <wzang@chromium.org>
Reviewed-by: Elliot Glaysher <erg@chromium.org>
Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541358}
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/browser/chromeos/extensions/wallpaper_api.cc
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/browser/chromeos/extensions/wallpaper_private_api.cc
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/browser/profiles/profile.cc
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/browser/resources/chromeos/wallpaper_manager/js/wallpaper_manager.js
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/common/pref_names.cc
[modify] https://crrev.com/1fe6772a6a709b035733b290154f7c36fac74e68/chrome/common/pref_names.h