Cleanup: Remove unused bookmarks resources or mark them as platform-specific.

chrome/app/bookmarks_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Bookmarks specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- Begin of Bookmarks Bar strings-->
   <if expr="not is_android">
     <!-- The following two strings are shown when the user has no bookmarks yet. -->
     <message name="IDS_BOOKMARKS_NO_ITEMS" desc="Text shown when the user has no bookmarks">
       For quick access, place your bookmarks here on the bookmarks bar.
     </message>
     <message name="IDS_BOOKMARK_BAR_IMPORT_LINK" desc="text shown for importing ">
       Import bookmarks now...
     </message>
 
     <!-- The special folders created when importing from other other browsers. -->
-    <message name="IDS_BOOKMARK_GROUP_FROM_IE" desc="The group name of bookmarks from Internet Explorer">
-      Imported From IE
-    </message>
+    <if expr="is_win">
+      <message name="IDS_BOOKMARK_GROUP_FROM_IE" desc="The group name of bookmarks from Internet Explorer">
+        Imported From IE
+      </message>
+    </if>
     <message name="IDS_BOOKMARK_GROUP_FROM_FIREFOX" desc="The group name of bookmarks from Firefox">
       Imported From Firefox
     </message>
     <message name="IDS_BOOKMARK_GROUP_FROM_SAFARI" desc="The group name of bookmarks from Safari">
       Imported From Safari
     </message>
-    <message name="IDS_BOOKMARK_GROUP_FROM_GOOGLE_TOOLBAR" desc="The group name of bookmarks from Google Toolbar">
-      Imported From Google Toolbar
-    </message>
     <message name="IDS_BOOKMARK_GROUP" desc="The group name of bookmarks imported from a file">
       Imported
     </message>
   </if>
 
   <if expr="not use_titlecase">
     <message name="IDS_BOOKMARK_BAR_SHOW_APPS_SHORTCUT" desc="Name shown in the context menu to hide/show the apps shortcut in the bookmakr bar">
       Show apps shortcut
     </message>
   </if>
@@ skipping 224 matching lines @@
   </message>
   <!-- End of Bookmarks Sync Promo strings. -->
 
   <!-- Begin of Bookmark Editor strings. -->
   <message name="IDS_BOOKMARK_EDITOR_NAME_LABEL" desc="Label shown before the title/name of the URL.">
     Name:
   </message>
   <message name="IDS_BOOKMARK_AX_EDITOR_NAME_LABEL" desc="Spoken text for bookmark name text field in edit folder dialog">
     Bookmark name
   </message>
-  <message name="IDS_BOOKMARK_BAR_EDIT_FOLDER_LABEL" desc="Title of label before text field in edit folder dialog">
-    Name:
-  </message>
+  <if expr="is_macosx">
+    <message name="IDS_BOOKMARK_BAR_EDIT_FOLDER_LABEL" desc="Title of label before text field in edit folder dialog">
+      Name:
+    </message>
+  </if>
   <message name="IDS_BOOKMARK_AX_EDITOR_URL_LABEL" desc="Spoken text for bookmark URL text field in edit folder dialog.">
     Bookmark URL
   </message>
   <message name="IDS_BOOKMARK_EDITOR_URL_LABEL" desc="Label shown before the URL.">
     URL:
   </message>
   <message name="IDS_BOOKMARK_EDITOR_NEW_FOLDER_BUTTON" desc="Text on the new folder button.">
     New folder
   </message>
   <message name="IDS_BOOKMARK_EDITOR_NEW_FOLDER_MENU_ITEM" desc="Text on the new folder context menu item.">
@@ skipping 162 matching lines @@
   <!-- Being of Bookmark Star button strings. -->
   <message name="IDS_TOOLTIP_STAR" desc="The tooltip shown when you hover the star button in the right side of the location bar.">
     Bookmark this page
   </message>
   <message name="IDS_TOOLTIP_STARRED" desc="The tooltip shown when you hover the star button in the right side of the location bar and the current page is bookmarked.">
     Edit bookmark for this page
   </message>
   <!-- End of Bookmark Star button strings. -->
 
 </grit-part>