Refactor media galleries dialogs on cocoa to extract common code

chrome/chrome_browser_ui.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': [
     {
       'target_name': 'browser_ui',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 757 matching lines @@
         'browser/ui/cocoa/extensions/extension_installed_bubble_controller.mm',
         'browser/ui/cocoa/extensions/extension_keybinding_registry_cocoa.h',
         'browser/ui/cocoa/extensions/extension_keybinding_registry_cocoa.mm',
         'browser/ui/cocoa/extensions/extension_popup_controller.h',
         'browser/ui/cocoa/extensions/extension_popup_controller.mm',
         'browser/ui/cocoa/extensions/extension_uninstall_dialog_cocoa.mm',
         'browser/ui/cocoa/extensions/extension_view_mac.h',
         'browser/ui/cocoa/extensions/extension_view_mac.mm',
         'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h',
         'browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.mm',
+        'browser/ui/cocoa/extensions/media_gallery_list_entry_view.h',
+        'browser/ui/cocoa/extensions/media_gallery_list_entry_view.mm',
         'browser/ui/cocoa/extensions/media_galleries_scan_result_dialog_cocoa.h',
         'browser/ui/cocoa/extensions/media_galleries_scan_result_dialog_cocoa.mm',
         'browser/ui/cocoa/extensions/windowed_install_dialog_controller.h',
         'browser/ui/cocoa/extensions/windowed_install_dialog_controller.mm',
         'browser/ui/cocoa/external_protocol_dialog.h',
         'browser/ui/cocoa/external_protocol_dialog.mm',
         'browser/ui/cocoa/fast_resize_view.h',
         'browser/ui/cocoa/fast_resize_view.mm',
         'browser/ui/cocoa/find_bar/find_bar_bridge.h',
         'browser/ui/cocoa/find_bar/find_bar_bridge.mm',
@@ skipping 2344 matching lines @@
             'browser/ui/webui/local_discovery/local_discovery_ui.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui.h',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.cc',
             'browser/ui/webui/local_discovery/local_discovery_ui_handler.h',
           ],
         }],
       ],
     },
   ],
 }