Create a field test for sync sign in promo strings.

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"
 
@@ skipping 27 matching lines @@
 
   // Registers the preferences the Sync Promo UI needs.
   static void RegisterUserPrefs(PrefService* prefs);
 
   // Returns the sync promo URL wth the given arguments in the query.
   // |next_page| is the URL to navigate to when the user completes or skips the
   // promo. If an empty URL is given then the promo will navigate to the NTP.
   // If |show_title| is true then the promo title is made visible.
   static GURL GetSyncPromoURL(const GURL& next_page, bool show_title);
 
-  // Gets the show title value from the query portion of the sync promo URL.
-  static bool GetShowTitleForSyncPromoURL(const GURL& url);
+  // Gets the is launch page value from the query portion of the sync promo URL.
+  static bool GetIsLaunchPageForSyncPromoURL(const GURL& url);
 
   // Gets the next page URL from the query portion of the sync promo URL.
   static GURL GetNextPageURLForSyncPromoURL(const GURL& url);
 
   // Returns true if the sync promo page was ever shown at startup.
   static bool UserHasSeenSyncPromoAtStartup(Profile* profile);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SyncPromoUI);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_PROMO_UI_H_