Add accessibility related notification to notification center

ash/ash_strings.grd

Index: ash/ash_strings.grd
diff --git a/ash/ash_strings.grd b/ash/ash_strings.grd
index 719b198a5b5de80252cfa8c800b6587111c2d9ec..9310cf96ac25bba855bad743df817f3f3dba8fd2 100644
--- a/ash/ash_strings.grd
+++ b/ash/ash_strings.grd
@@ -170,15 +170,20 @@ This file contains the strings for ash.
       <message name="IDS_ASH_STATUS_TRAY_ACCESSIBLE_DESCRIPTION" desc="The accessible description of the status tray and the information on it.">
         Status tray, time <ph name="time">$1<ex>9:50</ex></ph>, <ph name="battery">$2<ex>Battery is full.</ex></ph>
       </message>
-      <message name="IDS_ASH_STATUS_TRAY_BRAILLE_DISPLAY_CONNECTED_BUBBLE" desc="The message shown on a bubble when a braille display is connected">
-Braille display connected.
+      <message name="IDS_ASH_STATUS_TRAY_BRAILLE_DISPLAY_CONNECTED" desc="The message shown on a notification when a braille display is connected">
+        Braille display connected.
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SETTINGS" desc="The accessible text for a settings button.">
         Settings
       </message>
-      <message name="IDS_ASH_STATUS_TRAY_SPOKEN_FEEDBACK_ENABLED_BUBBLE" desc="The message shown on a bubble when spoken feedback is enabled">
-ChromeVox (spoken feedback) is enabled.
-Press Ctrl+Alt+Z to disable.
+      <message name="IDS_ASH_STATUS_TRAY_SPOKEN_FEEDBACK_ENABLED" desc="The message shown on a notification when spoken feedback is enabled">
+        Press Ctrl + Alt + Z to disable spoken feedback.
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_SPOKEN_FEEDBACK_ENABLED_TITLE" desc="The title message shown on a notification when spoken feedback is enabled">
+        ChromeVox enabled
+      </message>
+      <message name="IDS_ASH_STATUS_TRAY_SPOKEN_FEEDBACK_BRAILLE_ENABLED_TITLE" desc="The message shown on a notification when both the spoken feedback and braille are enabled">
+        Braille and ChromeVox are enabled
       </message>
       <message name="IDS_ASH_STATUS_TRAY_SIGN_OUT" desc="The label used for the button in the status tray to sign out of the system.">
         Sign out