Use NTPTileSource in MVS interface.

chrome/browser/android/ntp/most_visited_sites_bridge.cc

Index: chrome/browser/android/ntp/most_visited_sites_bridge.cc
diff --git a/chrome/browser/android/ntp/most_visited_sites_bridge.cc b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
index 7c0676f30d28ac3eb89531dda8ec52e4e06c726b..d8edf8b621fe310d78e7a9e5d80f2058f0d66d6e 100644
--- a/chrome/browser/android/ntp/most_visited_sites_bridge.cc
+++ b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
@@ -42,6 +42,7 @@ using base::android::ToJavaIntArray;
 using content::BrowserThread;
 using ntp_tiles::MostVisitedSites;
 using ntp_tiles::MostVisitedSitesSupervisor;
+using ntp_tiles::NTPTileSource;
 using suggestions::SuggestionsServiceFactory;
 
 MostVisitedSitesBridge::SupervisorBridge::SupervisorBridge(Profile* profile)
@@ -206,10 +207,13 @@ void MostVisitedSitesBridge::RecordTileTypeMetrics(
     const JavaParamRef<jintArray>& jtile_types,
     const JavaParamRef<jintArray>& jsources) {
   std::vector<int> tile_types;
-  std::vector<int> sources;
-
   base::android::JavaIntArrayToIntVector(env, jtile_types, &tile_types);
-  base::android::JavaIntArrayToIntVector(env, jsources, &sources);
+  std::vector<int> int_sources;
+  base::android::JavaIntArrayToIntVector(env, jsources, &int_sources);
+  std::vector<NTPTileSource> sources;
+  for (int source : int_sources) {
+    sources.push_back(static_cast<ntp_tiles::NTPTileSource>(source));
+  }
 
   most_visited_.RecordTileTypeMetrics(tile_types, sources);
 }
@@ -220,7 +224,8 @@ void MostVisitedSitesBridge::RecordOpenedMostVisitedItem(
     jint index,
     jint tile_type,
     jint source) {
-  most_visited_.RecordOpenedMostVisitedItem(index, tile_type, source);
+  most_visited_.RecordOpenedMostVisitedItem(
+      index, tile_type, static_cast<ntp_tiles::NTPTileSource>(source));
 }
 
 // static