Add xdisplaycheck back until //build dependency is removed

BUG=670470
R=dpranke@chromium.org

Review-Url: https://codereview.chromium.org/2553033003
Cr-Original-Commit-Position: refs/heads/master@{#436864}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: af830f3a656f8895dcdd30239e074e5521c313ee
2 files changed
tree: 0315bf471f7a12a390a5cd8a6a11b0640582884a
  1. BUILD.gn
  2. xdisplaycheck.cc