ntp_tiles: Cleanup enum names

components/ntp_tiles/BUILD.gn

Index: components/ntp_tiles/BUILD.gn
diff --git a/components/ntp_tiles/BUILD.gn b/components/ntp_tiles/BUILD.gn
index 2c4870316d6dbcf2420d45b419832dd2244b7a63..b0784a80bc16a5095074cc0128d420cbe5c3f560 100644
--- a/components/ntp_tiles/BUILD.gn
+++ b/components/ntp_tiles/BUILD.gn
@@ -23,7 +23,6 @@ static_library("ntp_tiles") {
     "most_visited_sites.h",
     "ntp_tile.cc",
     "ntp_tile.h",
-    "ntp_tile_source.h",
     "popular_sites.h",
     "popular_sites_impl.cc",
     "popular_sites_impl.h",
@@ -31,6 +30,8 @@ static_library("ntp_tiles") {
     "pref_names.h",
     "switches.cc",
     "switches.h",
+    "tile_source.h",
+    "tile_visual_type.h",
     "webui/ntp_tiles_internals_message_handler.cc",
     "webui/ntp_tiles_internals_message_handler.h",
     "webui/ntp_tiles_internals_message_handler_client.cc",
@@ -113,8 +114,8 @@ source_set("unit_tests") {
 if (is_android) {
   java_cpp_enum("ntp_tiles_enums_java") {
     sources = [
-      "metrics.h",
-      "ntp_tile_source.h",
+      "tile_source.h",
+      "tile_visual_type.h",
     ]
   }
 }