Moves shared history test helpers into util classes.

components/omnibox.gypi

 # 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.
 
 {
   'targets': [
     {
       # GN version: //components/omnibox/browser
       'target_name': 'omnibox_browser',
       'type': 'static_library',
@@ skipping 165 matching lines @@
         'omnibox_browser',
         'component_metrics_proto',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'omnibox/browser/history_index_restore_observer.cc',
         'omnibox/browser/history_index_restore_observer.h',
+        'omnibox/browser/in_memory_url_index_test_util.cc',
+        'omnibox/browser/in_memory_url_index_test_util.h',
         'omnibox/browser/mock_autocomplete_provider_client.cc',
         'omnibox/browser/mock_autocomplete_provider_client.h',
         'omnibox/browser/test_scheme_classifier.cc',
         'omnibox/browser/test_scheme_classifier.h',
       ],
     },
   ],
   'conditions': [
     ['OS == "android"', {
       'targets': [
         {
           # GN: //components/omnibox:autocomplete_match_type_javagen
           'target_name': 'autocomplete_match_type_java',
           'type': 'none',
           'variables': {
             'source_file': 'omnibox/browser/autocomplete_match_type.h',
           },
           'includes': [ '../build/android/java_cpp_enum.gypi' ],
         },
       ],
     }],
   ],
 }