Implement Desktop Media Picker (Mac version) for Desktop Capture API

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 776 matching lines @@
         'browser/ui/cocoa/location_bar/page_action_decoration.mm',
         'browser/ui/cocoa/location_bar/selected_keyword_decoration.h',
         'browser/ui/cocoa/location_bar/selected_keyword_decoration.mm',
         'browser/ui/cocoa/location_bar/star_decoration.h',
         'browser/ui/cocoa/location_bar/star_decoration.mm',
         'browser/ui/cocoa/location_bar/zoom_decoration.h',
         'browser/ui/cocoa/location_bar/zoom_decoration.mm',
         'browser/ui/cocoa/login_prompt_cocoa.h',
         'browser/ui/cocoa/login_prompt_cocoa.mm',
         'browser/ui/cocoa/main_menu_item.h',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_bridge.h',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_bridge.mm',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.h',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_cocoa.mm',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_controller.h',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_controller.mm',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_item.h',
+        'browser/ui/cocoa/media_picker/desktop_media_picker_item.mm',
         'browser/ui/cocoa/menu_button.h',
         'browser/ui/cocoa/menu_button.mm',
         'browser/ui/cocoa/multi_key_equivalent_button.h',
         'browser/ui/cocoa/multi_key_equivalent_button.mm',
         'browser/ui/cocoa/new_tab_button.h',
         'browser/ui/cocoa/new_tab_button.mm',
         'browser/ui/cocoa/nine_part_button_cell.h',
         'browser/ui/cocoa/nine_part_button_cell.mm',
         'browser/ui/cocoa/notifications/balloon_collection_cocoa.mm',
         'browser/ui/cocoa/notifications/balloon_controller.h',
@@ skipping 2304 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',
           ],
         }],
       ],
     },
   ],
 }