It is time.

gpu/config/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 
 declare_args() {
   # Use the PCI lib to collect GPU information on Linux.
   use_libpci = true
 }
@@ skipping 12 matching lines @@
     "gpu_driver_bug_list.h",
     "gpu_driver_bug_workaround_type.h",
     "gpu_dx_diagnostics_win.cc",
     "gpu_feature_type.h",
     "gpu_info.cc",
     "gpu_info.h",
     "gpu_info_collector_android.cc",
     "gpu_info_collector_linux.cc",
     "gpu_info_collector_linux.h",
     "gpu_info_collector_mac.mm",
-    "gpu_info_collector_ozone.cc",
     "gpu_info_collector_win.cc",
     "gpu_info_collector_x11.cc",
     "gpu_info_collector.cc",
     "gpu_info_collector.h",
     "gpu_performance_stats.h",
     "gpu_test_config.cc",
     "gpu_test_config.h",
     "gpu_test_expectations_parser.cc",
     "gpu_test_expectations_parser.h",
     "gpu_util.cc",
@@ skipping 25 matching lines @@
         "//third_party/amd/amd_videocard_info_win.cc",
       ]
     }
 
     # TODO(jschuh): size_t to int.
     cflags = [ "/wd4267" ]
   }
   if (use_libpci) {
     defines += [ "USE_LIBPCI=1" ]
   }
-  if (is_linux && use_libpci && (use_x11 || use_ozone)) {
+  if (is_linux && use_libpci && use_x11) {
     deps += [ "//build/config/linux:libpci" ]
   }
   if (is_linux && use_x11) {
     configs += [
       "//build/config/linux:x11",
       "//build/config/linux:xext",
     ]
     deps += [ "//third_party/libXNVCtrl" ]
   } else {
     sources -= [ "gpu_info_collector_x11.cc" ]
   }
-  if (!use_ozone) {
-    sources -= [ "gpu_info_collector_ozone.cc" ]
-  }
 }