[NTP4] Experiment for adding Chrome Web Store link to footer.

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

Index: chrome/browser/ui/webui/ntp/new_tab_ui.h
diff --git a/chrome/browser/ui/webui/ntp/new_tab_ui.h b/chrome/browser/ui/webui/ntp/new_tab_ui.h
index 866d2b498f98bb98fe81bf1a77ecacda53fb0e67..b940284df43d056ffcc92853931a2e8cb998a265 100644
--- a/chrome/browser/ui/webui/ntp/new_tab_ui.h
+++ b/chrome/browser/ui/webui/ntp/new_tab_ui.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -30,6 +30,13 @@ class NewTabUI : public content::WebUIController,
 
   static void RegisterUserPrefs(PrefService* prefs);
 
+  // Sets up any experiment in which the NTP might want to participate.
+  // The CWS footer link is one such example.
+  static void SetupFieldTrials();
+
+  // Returns whether or not the CWS footer experiment is enabled.
+  static bool IsWebStoreExperimentEnabled();
+
   // Adds "url", "title", and "direction" keys on incoming dictionary, setting
   // title as the url as a fallback on empty title.
   static void SetURLTitleAndDirection(base::DictionaryValue* dictionary,