Chromium side of Writing Direction Context Menu on OS X

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 302 matching lines @@
         &amp;Edit
       </message>
       <message name="IDS_LEARN_MORE" desc="Learn more text">
         Learn more
       </message>
       <message name="IDS_ABORT" desc="Abort operation">
         Abort
       </message>
 
       <!-- content area context menus -->
+      <if expr="os == 'darwin'">
+          <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_MENU" desc="The name of the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
+            Writing Direction
+          </message>
+          <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_DEFAULT" desc="The name of the 'default' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
+            Default
+          </message>
+          <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_LTR" desc="The name of the 'Left to Right' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
+            Left to Right
+          </message>
+          <message name="IDS_CONTENT_CONTEXT_WRITING_DIRECTION_RTL" desc="The name of the 'Right to Left' item from the Writing Direction submenu in the content area context menu.  To translate, launch /Applications/Textedit.app in an appropriately localized version of OS X, right-click on the text entry area and use the translation from there.">
+            Right to Left
+          </message>
+      </if>
       <if expr="not pp_ifdef('use_titlecase')">
         <message name="IDS_CONTENT_CONTEXT_BACK" desc="The name of the Back command in the content area context menu">
           &amp;Back
         </message>
         <message name="IDS_CONTENT_CONTEXT_FORWARD" desc="The name of the Forward command in the content area context menu">
           &amp;Forward
         </message>
         <message name="IDS_CONTENT_CONTEXT_SAVEPAGEAS" desc="The name of the Save Page As command in the content area context menu">
           Save &amp;as...
         </message>
@@ skipping 6521 matching lines @@
       <message name="IDS_LOGIN_ERROR_NO_NETWORK_LIBRARY" desc="Couldn't log in because nework library couldn't be loaded">
         Can't access network library
       </message>
     </if>
      <message name="IDS_BOOKMARK_BAR_IMPORT_LINK" desc="text shown for importing ">
        Import bookmarks now...
      </message>
     </messages>
   </release>
 </grit>