Add metrics for search engine promo and search widget

components/search_engines/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//tools/json_to_struct/json_to_struct.gni")
+if (is_android) {
+  import("//build/config/android/config.gni")
+  import("//build/config/android/rules.gni")
+}
 
 static_library("search_engines") {
   sources = [
     "default_search_manager.cc",
     "default_search_manager.h",
     "keyword_table.cc",
     "keyword_table.h",
     "keyword_web_data_service.cc",
     "keyword_web_data_service.h",
     "search_engine_data_type_controller.cc",
@@ skipping 134 matching lines @@
   }
 }
 
 json_to_struct("prepopulated_engines") {
   visibility = [ ":*" ]
 
   source = "prepopulated_engines.json"
   schema_file = "prepopulated_engines_schema.json"
   namespace = "TemplateURLPrepopulateData"
 }
+
+if (is_android) {
+  java_cpp_enum("search_engine_type_java") {
+    sources = [
+      "search_engine_type.h",
+    ]
+  }
+}