Add NewTabPage.TileType and .TileTypeClicked on Android

components/ntp_tiles/most_visited_sites.cc

Index: components/ntp_tiles/most_visited_sites.cc
diff --git a/components/ntp_tiles/most_visited_sites.cc b/components/ntp_tiles/most_visited_sites.cc
index 55c2edc6b9609baf7ec030ef0ee5bacd1e5a6279..dcc1daee3c5cb50f9155865725b5ec5d53ca0503 100644
--- a/components/ntp_tiles/most_visited_sites.cc
+++ b/components/ntp_tiles/most_visited_sites.cc
@@ -233,6 +233,9 @@ void MostVisitedSites::RecordTileTypeMetrics(
   for (size_t i = 0; i < tile_types.size(); ++i) {
     int tile_type = tile_types[i];
     ++counts_per_type[tile_type];
+
+    UMA_HISTOGRAM_ENUMERATION("NewTabPage.TileType", tile_type, NUM_TILE_TYPES);
+
     std::string histogram = base::StringPrintf(
         "NewTabPage.TileType.%s",
         GetSourceHistogramName(sources[i]).c_str());
@@ -256,6 +259,9 @@ void MostVisitedSites::RecordOpenedMostVisitedItem(int index,
       "NewTabPage.MostVisited.%s", GetSourceHistogramName(source).c_str());
   LogHistogramEvent(histogram, index, num_sites_);
 
+  UMA_HISTOGRAM_ENUMERATION(
+      "NewTabPage.TileTypeClicked", tile_type, NUM_TILE_TYPES);
+
   histogram = base::StringPrintf("NewTabPage.TileTypeClicked.%s",
                                  GetSourceHistogramName(source).c_str());
   LogHistogramEvent(histogram, tile_type, NUM_TILE_TYPES);