Scrub ozone files from linux GN build

chrome/browser/extensions/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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
@@ skipping 203 matching lines @@
       sources += rebase_path(
           gypi_values.chrome_browser_extensions_android_sources,
           ".", "//chrome")
     }
 
     if (enable_app_list) {
       sources += rebase_path(
           gypi_values.chrome_browser_extensions_app_list_sources,
           ".", "//chrome")
     }
+
+    if (!use_ozone) {
+      sources -= [
+        "global_shortcut_listener_ozone.cc",
+      ]
+    }
   }
 }