First version of the time slicing on the urls. Not ready for review yet.

chrome/browser/ui/webui/ntp/new_tab_page_handler.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_
 
 #include "base/values.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/web_ui_message_handler.h"
@@ skipping 47 matching lines @@
   // The purpose of this enum is to track which page on the NTP is showing.
   // The lower 10 bits of kNtpShownPage are used for the index within the page
   // group, and the rest of the bits are used for the page group ID (defined
   // here).
   static const int kPageIdOffset = 10;
   enum {
     INDEX_MASK = (1 << kPageIdOffset) - 1,
     MOST_VISITED_PAGE_ID = 1 << kPageIdOffset,
     APPS_PAGE_ID = 2 << kPageIdOffset,
     BOOKMARKS_PAGE_ID = 3 << kPageIdOffset,
-    LAST_PAGE_ID = BOOKMARKS_PAGE_ID
+    SUGGESTIONS_PAGE_ID = 4 << kPageIdOffset,
+    LAST_PAGE_ID = SUGGESTIONS_PAGE_ID
   };
   static const int kHistogramEnumerationMax =
       (LAST_PAGE_ID >> kPageIdOffset) + 1;
 
   // Helper to send out promo resource change notification.
   void Notify(chrome::NotificationType notification_type);
 
   DISALLOW_COPY_AND_ASSIGN(NewTabPageHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_