Use the media galleries controller interface for the scan result dialog.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1074 matching lines @@
         'browser/media/webrtc_rtp_dump_handler_unittest.cc',
         'browser/media/webrtc_rtp_dump_writer_unittest.cc',
         'browser/media_galleries/fileapi/native_media_file_util_unittest.cc',
         'browser/media_galleries/linux/mtp_device_object_enumerator_unittest.cc',
         'browser/media_galleries/mac/mtp_device_delegate_impl_mac_unittest.mm',
         'browser/media_galleries/win/mtp_device_delegate_impl_win_unittest.cc',
         'browser/media_galleries/media_file_system_registry_unittest.cc',
         'browser/media_galleries/media_folder_finder_unittest.cc',
         'browser/media_galleries/media_galleries_dialog_controller_mock.cc',
         'browser/media_galleries/media_galleries_dialog_controller_mock.h',
+        'browser/media_galleries/media_galleries_dialog_controller_test_util.cc',
+        'browser/media_galleries/media_galleries_dialog_controller_test_util.h',
         'browser/media_galleries/media_galleries_permission_controller_unittest.cc',
         'browser/media_galleries/media_galleries_permissions_unittest.cc',
         'browser/media_galleries/media_galleries_preferences_unittest.cc',
-        'browser/media_galleries/media_galleries_scan_result_dialog_controller_unittest.cc',
+        'browser/media_galleries/media_galleries_scan_result_controller_unittest.cc',
         'browser/media_galleries/media_scan_manager_unittest.cc',
         'browser/media_galleries/win/mtp_device_object_enumerator_unittest.cc',
         'browser/metrics/chrome_metrics_service_accessor_unittest.cc',
         'browser/metrics/cloned_install_detector_unittest.cc',
         'browser/metrics/extensions_metrics_provider_unittest.cc',
         'browser/metrics/gpu_metrics_provider_unittest.cc',
         'browser/metrics/metrics_log_unittest.cc',
         'browser/metrics/metrics_service_unittest.cc',
         'browser/metrics/plugin_metrics_provider_unittest.cc',
         'browser/metrics/profiler_metrics_provider_unittest.cc',
@@ skipping 485 matching lines @@
         'browser/ui/cocoa/download/download_shelf_mac_unittest.mm',
         'browser/ui/cocoa/download/download_shelf_view_unittest.mm',
         'browser/ui/cocoa/download/download_util_mac_unittest.mm',
         'browser/ui/cocoa/draggable_button_unittest.mm',
         'browser/ui/cocoa/extensions/browser_actions_container_view_unittest.mm',
         'browser/ui/cocoa/extensions/extension_install_prompt_test_utils.h',
         'browser/ui/cocoa/extensions/extension_install_prompt_test_utils.mm',
         'browser/ui/cocoa/extensions/extension_install_view_controller_unittest.mm',
         'browser/ui/cocoa/extensions/extension_installed_bubble_controller_unittest.mm',
         'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa_unittest.mm',
-        'browser/ui/cocoa/extensions/media_galleries_scan_result_dialog_cocoa_unittest.mm',
         'browser/ui/cocoa/fast_resize_view_unittest.mm',
         'browser/ui/cocoa/find_bar/find_bar_bridge_unittest.mm',
         'browser/ui/cocoa/find_bar/find_bar_cocoa_controller_unittest.mm',
         'browser/ui/cocoa/find_bar/find_bar_text_field_cell_unittest.mm',
         'browser/ui/cocoa/find_bar/find_bar_text_field_unittest.mm',
         'browser/ui/cocoa/find_bar/find_bar_view_unittest.mm',
         'browser/ui/cocoa/find_pasteboard_unittest.mm',
         'browser/ui/cocoa/first_run_bubble_controller_unittest.mm',
         'browser/ui/cocoa/floating_bar_backing_view_unittest.mm',
         'browser/ui/cocoa/framed_browser_window_unittest.mm',
@@ skipping 1245 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }