GitLab

This reverts "Revert of cheets: implement cros side of
WallpaperManagerService."
commit 9aea0003.

This fixes build for (patchset 16 id:300001 of
https://codereview.chromium.org/2264743002/ ) which was broken due to
commit queue conflict.

TBR=xiaohuic@chromium.org,xiyuan@chromium.org,nya@chromium.org,lhchavez@chromium.org,hidehiko@chromium.org,dcheng@chromium.org,yusukes@chromium.org,muyuanli@chromium.org
BUG=642465

Review-Url: https://codereview.chromium.org/2328903002
Cr-Commit-Position: refs/heads/master@{#417618}