Stop setting use_qualified_include to true now that that is the default.

content/shell/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/features.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/console_app.gni")
 import("//build/config/win/manifest.gni")
 import("//media/media_options.gni")
@@ skipping 366 matching lines @@
       "browser/shell_plugin_service_filter.cc",
       "browser/shell_plugin_service_filter.h",
     ]
   }
 }
 
 grit("content_shell_resources_grit") {
   # External code should depend on ":resources" instead.
   visibility = [ ":*" ]
   source = "shell_resources.grd"
-  use_qualified_include = true
   outputs = [
     "grit/shell_resources.h",
     "shell_resources.pak",
   ]
 }
 
 copy("copy_shell_resources") {
   sources = [
     "$target_gen_dir/shell_resources.pak",
   ]
@@ skipping 403 matching lines @@
     data_deps += [
       "//breakpad:dump_syms",
       "//breakpad:microdump_stackwalk",
       "//breakpad:minidump_dump",
       "//breakpad:minidump_stackwalk",
       "//breakpad:symupload",
       "//tools/android/forwarder2",
     ]
   }
 }