Use qualified path for three more grit headers from ui.

ui/strings/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("//tools/grit/grit_rule.gni")
 
 # Meta target that includes both ui_strings and app_locale_settings. Most
 # targets want both. You can depend on the individually if you need to.
 group("strings") {
   deps = [
     ":ui_strings",
     ":app_locale_settings",
   ]
 }
 
 grit("ui_strings") {
   source = "ui_strings.grd"
+  use_qualified_include = true
   outputs = [
     "grit/ui_strings.h",
     "ui_strings_am.pak",
     "ui_strings_ar.pak",
     "ui_strings_bg.pak",
     "ui_strings_bn.pak",
     "ui_strings_ca.pak",
     "ui_strings_cs.pak",
     "ui_strings_da.pak",
     "ui_strings_de.pak",
@@ skipping 41 matching lines @@
     "ui_strings_tr.pak",
     "ui_strings_uk.pak",
     "ui_strings_vi.pak",
     "ui_strings_zh-CN.pak",
     "ui_strings_zh-TW.pak",
   ]
 }
 
 grit("app_locale_settings") {
   source = "app_locale_settings.grd"
+  use_qualified_include = true
   outputs = [
     "grit/app_locale_settings.h",
     "app_locale_settings_am.pak",
     "app_locale_settings_ar.pak",
     "app_locale_settings_bg.pak",
     "app_locale_settings_bn.pak",
     "app_locale_settings_ca.pak",
     "app_locale_settings_cs.pak",
     "app_locale_settings_da.pak",
     "app_locale_settings_de.pak",
@@ skipping 38 matching lines @@
     "app_locale_settings_ta.pak",
     "app_locale_settings_te.pak",
     "app_locale_settings_th.pak",
     "app_locale_settings_tr.pak",
     "app_locale_settings_uk.pak",
     "app_locale_settings_vi.pak",
     "app_locale_settings_zh-CN.pak",
     "app_locale_settings_zh-TW.pak",
   ]
 }