[AiS] Merge answers into highest-scoring result

components/omnibox/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.
 
 static_library("omnibox") {
   sources = [
     "answers_cache.h",
     "answers_cache.cc",
     "autocomplete_input.cc",
     "autocomplete_input.h",
@@ skipping 52 matching lines @@
     ":omnibox",
     "//base",
     "//components/metrics/proto",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "answers_cache_unittest.cc",
+    "base_search_provider_unittest.cc",
     "autocomplete_input_unittest.cc",
     "autocomplete_match_unittest.cc",
     "autocomplete_result_unittest.cc",
     "keyword_provider_unittest.cc",
     "omnibox_field_trial_unittest.cc",
   ]
 
   deps = [
     ":omnibox",
     ":test_support",
     "//testing/gtest",
   ]
 }