Show sync promo at startup

chrome/browser/ui/webui/sync_promo_ui.h

 // Copyright (c) 2011 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_SYNC_PROMO_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_UI_H_
 #pragma once
 
 #include "chrome/browser/ui/webui/chrome_web_ui.h"
 
+class Profile;
+
 // The Web UI handler for chrome://syncpromo.
 class SyncPromoUI : public ChromeWebUI {
  public:
   // Constructs a SyncPromoUI. |contents| is the TabContents that this WebUI is
   // associated with. |contents| may not be NULL.
   explicit SyncPromoUI(TabContents* contents);
 
   // Returns true if the sync promo should be visible.
   static bool ShouldShowSyncPromo();
 
+  // Returns true if we should show the sync promo at startup.
+  static bool ShouldShowSyncPromoAtStartup(Profile* profile,
+                                           bool is_new_profile);
+  // Called when the sync promo has been shown so that we can keep track
+  // of the number of times we've displayed it.
+  static void DidShowSyncPromoAtStartup(Profile* profile);
+
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncPromoUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_UI_H_