Add a small untility for checking to see if the X server is alive.

tools/xdisplaycheck/xdisplaycheck.gyp

Index: tools/xdisplaycheck/xdisplaycheck.gyp
diff --git a/tools/xdisplaycheck/xdisplaycheck.gyp b/tools/xdisplaycheck/xdisplaycheck.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..cb22c2261192d37897f1b55522061ffed2ed2f20
--- /dev/null
+++ b/tools/xdisplaycheck/xdisplaycheck.gyp
@@ -0,0 +1,21 @@
+# Copyright (c) 2009 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'includes': [
+    '../../build/common.gypi',
+  ],
+  'targets': [
+    {
+      'target_name': 'xdisplaycheck',
+      'type': 'executable',
+      'dependencies': [
+        '../../build/linux/system.gyp:x11',
+      ],
+      'sources': [
+        'xdisplaycheck.cc',
+      ],
+    },
+  ],
+}