[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..0a008d37539473f64459a7f4f4044d677fffd215 100644
--- a/chrome/browser/ui/webui/ntp/new_tab_ui.h
+++ b/chrome/browser/ui/webui/ntp/new_tab_ui.h
@@ -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 SetupFieldTrails();
+
+  // 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,