[ntp4] Include a helper link for importing bookmarks if the user doesn't have any.

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 8455 matching lines @@
       </message>
       <message name="IDS_NEW_TAB_BOOKMARKS_PAGE_TITLE" desc="The 'Bookmarks' title on the new tab page">
         Bookmarks
       </message>
       <message name="IDS_NEW_TAB_BOOKMARKS_MANAGER_LINK_TITLE" desc="The title of the Bookmarks Manager link on the New Tab Page.">
         Manage bookmarks
       </message>
       <message name="IDS_NEW_TAB_BOOKMARKS_SHOW_ALL_LINK_TITLE" desc="The title of the show all bookmarks link on the New Tab Page.">
         Show all
       </message>
+      <message name="IDS_NEW_TAB_BOOKMARKS_IMPORT_LINK_TITLE" desc="The title of the Import bookmarks link on the New Tab Page.">
+        Import bookmarks from another browser
+      </message>
       <message name="IDS_NEW_TAB_RESTORE_THUMBNAILS_LINK"
          desc="The link that restores previously removed thumbnails">
         Restore all removed thumbnails
       </message>
       <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">
@@ skipping 5220 matching lines @@
     </messages>
     <structures fallback_to_english="true">
       <!-- Make sure these stay in sync with the structures in generated_resources.grd. -->
       <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>