Disable LeakSanitizer for xdisplaycheck. Prevent memory leaks in xdisplaycheck from interfering with LSan bots. BUG=NONE [email protected] Review URL: https://chromiumcodereview.appspot.com/19962006 Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src Cr-Mirrored-Commit: f00788c82a5fbf7348a61cf7871fad8977cae463