Adds an experiment that enabled SuggestionsService suggestions (MostLikely) on LocalNTP

chrome/browser/search/instant_service.h

Index: chrome/browser/search/instant_service.h
diff --git a/chrome/browser/search/instant_service.h b/chrome/browser/search/instant_service.h
index 44470e203e6a7808df0ca8fd4cde85aa34143648..8892528906e2d0e1781527fefc5449717ece3ccb 100644
--- a/chrome/browser/search/instant_service.h
+++ b/chrome/browser/search/instant_service.h
@@ -15,6 +15,8 @@
 #include "components/history/core/browser/top_sites_observer.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/search_engines/template_url_service_observer.h"
+#include "components/suggestions/proto/suggestions.pb.h"
+#include "components/suggestions/suggestions_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "url/gurl.h"
@@ -128,6 +130,9 @@ class InstantService : public KeyedService,
   // Called when a renderer process is terminated.
   void OnRendererProcessTerminated(int process_id);
 
+  // Called when SuggestionsService has a new suggestions profile available.
+  void OnSuggestionsAvailable(const suggestions::SuggestionsProfile& profile);
+
   // Called when we get new most visited items from TopSites, registered as an
   // async callback. Parses them and sends them to the renderer via
   // SendMostVisitedItems.
@@ -152,9 +157,12 @@ class InstantService : public KeyedService,
   // The process ids associated with Instant processes.
   std::set<int> process_ids_;
 
-  // InstantMostVisitedItems sent to the Instant Pages.
+  // InstantMostVisitedItems from TopSites.
   std::vector<InstantMostVisitedItem> most_visited_items_;
 
+  // InstantMostVisitedItems from SuggestionService.
+  std::vector<InstantMostVisitedItem> suggestions_items_;
+
   // Theme-related data for NTP overlay to adopt themes.
   scoped_ptr<ThemeBackgroundInfo> theme_info_;
 
@@ -176,6 +184,9 @@ class InstantService : public KeyedService,
   scoped_ptr<TemplateURLData> previous_default_search_provider_;
   GURL previous_google_base_url_;
 
+  // Suggestions Service to fetch server suggestions.
+  suggestions::SuggestionsService* suggestions_service_;
+
   // Used for Top Sites async retrieval.
   base::WeakPtrFactory<InstantService> weak_ptr_factory_;