Switch to using '-t ios' for grit

ui/base/strings/app_locale_settings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/app_locale_settings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="app_locale_settings_am.pak" type="data_package" lang="am" />
     <output filename="app_locale_settings_ar.pak" type="data_package" lang="ar" />
     <if expr="pp_ifdef('use_third_party_translations')">
       <output filename="app_locale_settings_ast.pak" type="data_package" lang="ast" />
@@ skipping 57 matching lines @@
     <output filename="app_locale_settings_lt.pak" type="data_package" lang="lt" />
     <output filename="app_locale_settings_lv.pak" type="data_package" lang="lv" />
     <output filename="app_locale_settings_ml.pak" type="data_package" lang="ml" />
     <output filename="app_locale_settings_mr.pak" type="data_package" lang="mr" />
     <output filename="app_locale_settings_ms.pak" type="data_package" lang="ms" />
     <output filename="app_locale_settings_nl.pak" type="data_package" lang="nl" />
     <!-- The translation console uses 'no' for Norwegian Bokmål. It should
          be 'nb'. -->
     <output filename="app_locale_settings_nb.pak" type="data_package" lang="no" />
     <output filename="app_locale_settings_pl.pak" type="data_package" lang="pl" />
-    <if expr="pp_ifdef('ios')">
+    <if expr="is_ios">
       <!-- iOS uses pt for pt-BR -->
       <output filename="app_locale_settings_pt.pak" type="data_package" lang="pt-BR" />
     </if>
-    <if expr="not pp_ifdef('ios')">
+    <if expr="not is_ios">
       <output filename="app_locale_settings_pt-BR.pak" type="data_package" lang="pt-BR" />
     </if>
     <output filename="app_locale_settings_pt-PT.pak" type="data_package" lang="pt-PT" />
     <output filename="app_locale_settings_ro.pak" type="data_package" lang="ro" />
     <output filename="app_locale_settings_ru.pak" type="data_package" lang="ru" />
     <output filename="app_locale_settings_sk.pak" type="data_package" lang="sk" />
     <output filename="app_locale_settings_sl.pak" type="data_package" lang="sl" />
     <output filename="app_locale_settings_sr.pak" type="data_package" lang="sr" />
     <output filename="app_locale_settings_sv.pak" type="data_package" lang="sv" />
     <output filename="app_locale_settings_sw.pak" type="data_package" lang="sw" />
@@ skipping 112 matching lines @@
         <!-- The relative font size in % used in Web UI (e.g. History).  -->
         <message name="IDS_WEB_FONT_SIZE" use_name_for_id="true">
           75%
         </message>
         <!-- The relative font size in % used in web-style native pages
         on Windows earlier than Vista (e.g. History).  -->
         <message name="IDS_WEB_FONT_SIZE_XP" use_name_for_id="true">
           75%
         </message>
       </if>
-      <if expr="is_macosx">
+      <if expr="is_macosx or is_ios">
         <!-- The font used in Web UI (e.g. History). -->
         <message name="IDS_WEB_FONT_FAMILY" use_name_for_id="true">
           'Lucida Grande', sans-serif
         </message>
 
         <!-- The relative font size in % used in Web UI (e.g. History).  -->
         <message name="IDS_WEB_FONT_SIZE" use_name_for_id="true">
           75%
         </message>
       </if>
@@ skipping 22 matching lines @@
         </message>
 
         <!-- The relative font size in % used in Web UI (e.g. History).  -->
         <message name="IDS_WEB_FONT_SIZE" use_name_for_id="true">
           75%
         </message>
       </if>
     </messages>
   </release>
 </grit>