webrtc: Remove dependency on xdisplaycheck

webrtc/test/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../build/webrtc.gni")
 import("//build/config/ui.gni")
@@ skipping 130 matching lines @@
 
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   if (is_ios) {
     configs += [ "//build/config/compiler:enable_arc" ]
   }
 
-  if (use_x11) {
-    deps += [ "//tools/xdisplaycheck" ]
-  }
-
   if (is_android) {
     deps += [ "//base:base" ]
     data = [
       "../build/android/test_runner.py",
     ]
   }
 
   if (rtc_use_memcheck) {
     data = valgrind_webrtc_dependencies
   }
@@ skipping 216 matching lines @@
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   deps = [
     ":test_support",
     ":video_test_common",
     "../modules/media_file",
     "//testing/gtest",
   ]
 }