Remove references to 'linux2' from our grd files.

chrome/app/resources/locale_settings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <grit latest_public_release="0" current_release="1">
   <outputs>
     <output filename="grit/locale_settings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
     </output>
     <output filename="locale_settings_am.rc" type="rc_all" lang="am" />
     <output filename="locale_settings_ar.rc" type="rc_all" lang="ar" />
     <output filename="locale_settings_bg.rc" type="rc_all" lang="bg" />
     <output filename="locale_settings_bn.rc" type="rc_all" lang="bn" />
@@ skipping 491 matching lines @@
       <message name="IDS_DOWNLOAD_IN_PROGRESS_MINIMUM_HEIGHT_LINES" use_name_for_id="true">
         4
       </message>
 
       <!-- The width for the "create application shortcuts" dialog in characters. -->
       <message name="IDS_CREATE_SHORTCUTS_DIALOG_WIDTH_CHARS" use_name_for_id="true">
         65
       </message>
 
       <!-- The width and height for the "create application shortcuts error" dialog. -->
-      <if expr="os == 'linux2' or os.find('bsd') != -1 or os == 'sunos5'">
+      <if expr="is_posix and not is_macosx">
         <message name="IDS_CREATE_SHORTCUTS_ERROR_DIALOG_WIDTH_CHARS" use_name_for_id="true">
          60
         </message>
         <message name="IDS_CREATE_SHORTCUTS_ERROR_DIALOG_HEIGHT_LINES" use_name_for_id="true">
          6
         </message>
       </if>
 
       <!-- The width of the Instant confirm dialog box in characters. -->
       <message name="IDS_INSTANT_CONFIRM_DIALOG_WIDTH_CHARS" use_name_for_id="true">
@@ skipping 29 matching lines @@
         </message>
       </if>
 
       <!-- The width of the default search engine dialog in characters -->
       <message name="IDS_DEFAULT_SEARCH_WIDTH_CHARS" use_name_for_id="true">
         82
       </message>
     </messages>
   </release>
 </grit>