Emit correct NewTabPage.SuggestionsType metrics

chrome/common/instant_types.h

Index: chrome/common/instant_types.h
diff --git a/chrome/common/instant_types.h b/chrome/common/instant_types.h
index 617f8f96a76d7917d2ff499113876edeaaed4978..fe66a4eff98c014f2803e7635079ac7b5e6d24ac 100644
--- a/chrome/common/instant_types.h
+++ b/chrome/common/instant_types.h
@@ -142,6 +142,10 @@ struct InstantMostVisitedItem {
   // The external URL that should be pinged when this item is suggested/clicked.
   GURL impression_url;
   GURL click_url;
+
+  // True if it's a server side suggestion.
+  // Otherwise, it's a client side suggestion.
+  bool is_server_side_suggestion;
 };
 
 // An InstantMostVisitedItem along with its assigned restricted ID.