Added new adaptive "Suggest" tab on the New Tab Page, behing the flag, for the experiments.

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

Index: chrome/browser/ui/webui/ntp/new_tab_ui.cc
diff --git a/chrome/browser/ui/webui/ntp/new_tab_ui.cc b/chrome/browser/ui/webui/ntp/new_tab_ui.cc
index 452880e466effaae6130ca813f0ec904e92ef655..ccda1d509729a7620f4d8af093ee3f9191f84f78 100644
--- a/chrome/browser/ui/webui/ntp/new_tab_ui.cc
+++ b/chrome/browser/ui/webui/ntp/new_tab_ui.cc
@@ -38,6 +38,7 @@
 #include "chrome/browser/ui/webui/ntp/ntp_resource_cache_factory.h"
 #include "chrome/browser/ui/webui/ntp/ntp_resource_cache.h"
 #include "chrome/browser/ui/webui/ntp/recently_closed_tabs_handler.h"
+#include "chrome/browser/ui/webui/ntp/suggested_page_handler.h"
 #include "chrome/browser/ui/webui/theme_source.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_switches.h"
@@ -99,6 +100,7 @@ NewTabUI::NewTabUI(content::WebUI* web_ui)
   if (!GetProfile()->IsOffTheRecord()) {
     web_ui->AddMessageHandler(new browser_sync::ForeignSessionHandler());
     web_ui->AddMessageHandler(new MostVisitedHandler());
+    web_ui->AddMessageHandler(new SuggestedHandler());
     web_ui->AddMessageHandler(new RecentlyClosedTabsHandler());
     web_ui->AddMessageHandler(new MetricsHandler());
     if (GetProfile()->IsSyncAccessible())
@@ -218,6 +220,7 @@ void NewTabUI::RegisterUserPrefs(PrefService* prefs) {
   NewTabPageHandler::RegisterUserPrefs(prefs);
   AppLauncherHandler::RegisterUserPrefs(prefs);
   MostVisitedHandler::RegisterUserPrefs(prefs);
+  SuggestedHandler::RegisterUserPrefs(prefs);
 }
 
 // static
@@ -248,6 +251,12 @@ bool NewTabUI::IsWebStoreExperimentEnabled() {
 }
 
 // static
+bool NewTabUI::IsSuggestionsPageEnabled() {
+  return CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableSuggestedTabPage);
+}
+
+// static
 void NewTabUI::SetURLTitleAndDirection(DictionaryValue* dictionary,
                                        const string16& title,
                                        const GURL& gurl) {