Change wording on incognito NTP to reflect the fact that all incognito windows need to be closed.

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.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 8051 matching lines @@
       <message name="IDS_NEW_TAB_RESTORE_THUMBNAILS_SHORT_LINK"
          desc="The link that restores previously removed thumbnails. Context is 'Thumbnail removed. Undo | Restore all'">
         Restore all
       </message>
       <message name="IDS_NEW_TAB_RECENTLY_CLOSED"
                desc="The 'Recently Closed' heading on the new tab page">
         Recently closed
       </message>
       <message name="IDS_NEW_TAB_OTR_MESSAGE"
                desc="Used when a person opens an OTR window">
-        <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>You've gone incognito<ph name="END_BOLD">"&lt;/strong&gt;</ph>. Pages you view in this window won't appear in your browser history or search history, and they won't leave other traces, like cookies, on your computer after you close the incognito window. Any files you download or bookmarks you create will be preserved, however.
+        <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>You've gone incognito<ph name="END_BOLD">"&lt;/strong&gt;</ph>. Pages you view in this window won't appear in your browser history or search history, and they won't leave other traces, like cookies, on your computer after you close all open incognito windows. Any files you download or bookmarks you create will be preserved, however.
         <ph name="LINE_BREAK">&lt;br /&gt;&lt;br /&gt;</ph>
         <ph name="BEGIN_BOLD">&lt;strong&gt;</ph>Going incognito doesn't affect the behavior of other people, servers, or software. Be wary of:<ph name="END_BOLD">&lt;/strong&gt;</ph>
         <ph name="BEGIN_LIST">&lt;ul&gt;</ph>
           <ph name="BEGIN_LIST_ITEM">&lt;li&gt;</ph>Websites that collect or share information about you<ph name="END_LIST_ITEM">&lt;/li&gt;</ph>
           <ph name="BEGIN_LIST_ITEM">&lt;li&gt;</ph>Internet service providers or employers that track the pages you visit<ph name="END_LIST_ITEM">&lt;/li&gt;</ph>
           <ph name="BEGIN_LIST_ITEM">&lt;li&gt;</ph>Malicious software that tracks your keystrokes in exchange for free smileys<ph name="END_LIST_ITEM">&lt;/li&gt;</ph>
           <ph name="BEGIN_LIST_ITEM">&lt;li&gt;</ph>Surveillance by secret agents<ph name="END_LIST_ITEM">&lt;/li&gt;</ph>
           <ph name="BEGIN_LIST_ITEM">&lt;li&gt;</ph>People standing behind you<ph name="END_LIST_ITEM">&lt;/li&gt;</ph>
         <ph name="END_LIST">&lt;/ul&gt;</ph>
         <ph name="BEGIN_LINK">&lt;a href="$1"&gt;</ph>Learn more<ph name="END_LINK">&lt;/a&gt;</ph> about incognito browsing.
@@ skipping 4821 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>