GN: Build //base with USE_SYMBOLIZE on Linux

base/BUILD.gn

 # Copyright (c) 2013 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")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
@@ skipping 865 matching lines @@
   # Linux.
   if (is_linux) {
     # TODO(brettw) this will need to be parameterized at some point.
     linux_configs = [
       "//build/config/linux:glib",
     ]
 
     configs += linux_configs
     all_dependent_configs = linux_configs
 
+    defines += [ "USE_SYMBOLIZE" ]
+
     # These dependencies are not required on Android, and in the case
     # of xdg_mime must be excluded due to licensing restrictions.
     deps += [
       "//base/third_party/symbolize",
       "//base/third_party/xdg_mime",
       "//base/third_party/xdg_user_dirs",
     ]
   } else {
     # Non-Linux.
     sources -= [
@@ skipping 576 matching lines @@
   # GYP: //base.gyp:base_unittests_apk
   unittest_apk("base_unittests_apk") {
     deps = [
       ":base_java",
       ":base_java_unittest_support",
       ":base_unittests",
     ]
     unittests_dep = ":base_unittests"
   }
 }