Media indicator for background recording task

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index f6555c3f74dd35b3be79a7c76e23aec02b274187..73ed795e81321f20689b10b45e2be24f78e433fc 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -325,21 +325,21 @@
         'system/chromeos/audio/tray_audio_chromeos.h',
         'system/chromeos/audio/tray_audio_delegate_chromeos.cc',
         'system/chromeos/audio/tray_audio_delegate_chromeos.h',
-        'system/chromeos/enterprise/enterprise_domain_observer.h',
         'system/chromeos/bluetooth/bluetooth_notification_controller.cc',
         'system/chromeos/bluetooth/bluetooth_notification_controller.h',
         'system/chromeos/brightness/brightness_controller_chromeos.cc',
         'system/chromeos/brightness/brightness_controller_chromeos.h',
         'system/chromeos/brightness/tray_brightness.cc',
         'system/chromeos/brightness/tray_brightness.h',
-        'system/chromeos/enterprise/tray_enterprise.h',
+        'system/chromeos/enterprise/enterprise_domain_observer.h',
         'system/chromeos/enterprise/tray_enterprise.cc',
+        'system/chromeos/enterprise/tray_enterprise.h',
         'system/chromeos/keyboard_brightness_controller.cc',
         'system/chromeos/keyboard_brightness_controller.h',
-        'system/chromeos/label_tray_view.h',
         'system/chromeos/label_tray_view.cc',
-        'system/chromeos/managed/tray_locally_managed_user.h',
+        'system/chromeos/label_tray_view.h',
         'system/chromeos/managed/tray_locally_managed_user.cc',
+        'system/chromeos/managed/tray_locally_managed_user.h',
         'system/chromeos/network/network_connect.cc',
         'system/chromeos/network/network_connect.h',
         'system/chromeos/network/network_detailed_view.h',
@@ -441,6 +441,9 @@
         'system/tray/fixed_sized_scroll_view.h',
         'system/tray/hover_highlight_view.cc',
         'system/tray/hover_highlight_view.h',
+        'system/tray/media_security/media_capture_observer.h',
+        'system/tray/media_security/media_tray_item.cc',
+        'system/tray/media_security/media_tray_item.h',
         'system/tray/special_popup_row.cc',
         'system/tray/special_popup_row.h',
         'system/tray/system_tray.cc',
@@ -988,6 +991,7 @@
         'system/chromeos/tray_display_unittest.cc',
         'system/date/date_view_unittest.cc',
         'system/overview/overview_button_tray_unittest.cc',
+        'system/tray/media_security/media_tray_item_unittest.cc',
         'system/tray/system_tray_unittest.cc',
         'system/tray/tray_details_view_unittest.cc',
         'system/user/tray_user_unittest.cc',