Fix bugs in the display notification

ash/ash_chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from ash_strings.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
 
   <!-- Device types -->
   <message name="IDS_ASH_CHROMEBASE" desc="The device name for a Chromebase (versus say Chromebox)">
     Chromebase
   </message>
   <message name="IDS_ASH_CHROMEBIT" desc="The device name for a Chromebit (versus say Chromebox)">
@@ skipping 274 matching lines @@
   </message>
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_OUTPUT" desc="The label used in audio detailed page for audio output section of ash tray pop up.">
     Output
   </message>
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_INPUT" desc="The label used in audio detailed page for audio input section of ash tray pop up.">
     Input
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_MIRRORING" desc="The label used in the tray to show that the current status is mirroring.">
     Mirroring to <ph name="DISPLAY_NAME">$1</ph>
   </message>
+  <message name="IDS_ASH_STATUS_TRAY_DISPLAY_MIRROR_EXIT" desc="The label used in the tray to show that mirror mode is exiting.">
+    Exiting mirror mode
+  </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_EXTENDED" desc="The label used in the tray to show that the current status is extended.">
     Extending screen to <ph name="DISPLAY_NAME">$1</ph>
   </message>
+  <message name="IDS_ASH_STATUS_TRAY_DISPLAY_REMOVED" desc="The text of the notification to show when a display is removed.">
+    Removed display <ph name="DISPLAY_NAME">$1</ph>
+  </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_MIRRORING_NO_INTERNAL" desc="The label used in the tray to show that the current status is mirroring and the device doesn't have the internal display.">
     Mirroring
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_EXTENDED_NO_INTERNAL" desc="The label used in the tray to show that the current status is extended and the device doesn't have the internal display.">
     Extending screen
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_DOCKED" desc="The title of the notification indicating that the system is in docked mode.">
     Docked mode
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_DOCKED_DESCRIPTION" desc="The body of the notification indicating that the system is in docked mode.">
     You can keep using your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> while it's connected to an external display, even with the lid closed.
   </message>
+  <message name="IDS_ASH_STATUS_TRAY_DISPLAY_DOCKED_EXITING" desc="The notification message shown to the user when the device is exiting docked mode.">
+    Exiting docked mode
+  </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_RESOLUTION_CHANGED" desc="The label used in the tray to notify that the display resolution settings has changed.">
     <ph name="DISPLAY_NAME">$1</ph> resolution was changed to <ph name="RESOLUTION">$2</ph>
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_RESOLUTION_CHANGED_TO_UNSUPPORTED" desc="The label used in the tray to notify that the display resolution settings has changed to an unsupported resolution and the system falls back to another resolution.">
     <ph name="DISPLAY_NAME">$1</ph> doesn't support <ph name="SPECIFIED_RESOLUTION">$2<ex>2560x1600</ex></ph>. The resolution was changed to <ph name="FALLBACK_RESOLUTION">$3<ex>1920x1200</ex></ph>
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED" desc="The label used in the tray to notify that the display rotation settings has changed.">
     <ph name="DISPLAY_NAME">$1</ph> was rotated to <ph name="ROTATION">$2</ph>
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_ANNOTATED_NAME" desc="Label used to show a display name with annotation (like screen resolution or overscan info).">
@@ skipping 10 matching lines @@
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_180" desc="The value of display orientation option item: 180-degree rotated">
     180&#x00B0;
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_270" desc="The value of display orientation option item: 270-degree rotated">
     270&#x00B0;
   </message>
   <message name="IDS_ASH_STATUS_TRAY_DISPLAY_UNIFIED" desc="The title of the notification indicating that the system is in unified desktop mode.">
     Unified desktop mode
   </message>
+  <message name="IDS_ASH_STATUS_TRAY_DISPLAY_UNIFIED_EXITING" desc="The title of the notification indicating that the system is exiting unified desktop mode.">
+    Exiting unified desktop mode
+  </message>
   <message name="IDS_ASH_STATUS_TRAY_CAPS_LOCK_ENABLED" desc="The label used for the tray item to indicate caps lock is on and to toggle caps lock by the click.">
     CAPS LOCK is on
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CAPS_LOCK_DISABLED" desc="The label used for the tray item to indicate caps lock is on and to toggle caps lock by the click.">
     CAPS LOCK is off
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH" desc="The shortcut text used for the caps lock tray item.">
     Search
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CAPS_LOCK_SHORTCUT_SEARCH_OR_SHIFT" desc="The shortcut text used for the caps lock tray item.">
@@ skipping 270 matching lines @@
            desc="Notification message to tell users about the deprecation of Shift+ESC shortcut to show the task manager.">
     The shortcut to open the task manager has changed. Please use <ph name="NEW_SHORTCUT">$1<ex>Search+Esc</ex></ph> instead of <ph name="OLD_SHORTCUT">$2<ex>Shift+Esc</ex></ph>.
   </message>
 
   <!-- Notification that an accelerator was pressed, so the user knows how to toggle it back -->
   <message name="IDS_HIGH_CONTRAST_ACCEL_MSG"
            desc="Notification message to tell users that they just pressed the Search+Shift+H shortcut to toggle High Contrast Mode, and that pressing it again will toggle it off.">
     High Contrast Mode enabled. Press Search+Shift+H again to toggle it off.
   </message>
 </grit-part>