Update Ash strings to use sentence case

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 76 matching lines @@
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_STATUS_CONNECTED" desc="The label used when a network connection is connected.">
     Connected
   </message>
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_STATUS_CONNECTING" desc="The label used when a network connection is connecting.">
     Connecting...
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CELLULAR_STATUS_NOT_ACTIVATED" desc="The label used when a cellular connection is not activated.">
     Not activated
   </message>
   <message name="IDS_ASH_STATUS_TRAY_VPN" desc="The label used in the VPN detailed view header.">
-    Private Network
+    Private network
   </message>
   <message name="IDS_ASH_STATUS_TRAY_VPN_BUILT_IN_PROVIDER" desc="The name of the built-in VPN provider that supports OpenVPN and L2TP over IPsec.">
     OpenVPN / L2TP
   </message>
   <message name="IDS_ASH_STATUS_TRAY_VPN_DISCONNECT" desc="Message on button that disconnects from the current VPN.">
     Disconnect
   </message>
   <message name="IDS_ASH_STATUS_TRAY_VPN_MONITORED" desc="The label used when a VPN connection may be monitored.">
     Connection may be monitored
   </message>
   <message name="IDS_ASH_STATUS_TRAY_WIFI" desc="The wifi network device.">
     Wi-Fi
   </message>
   <message name="IDS_ASH_STATUS_TRAY_CELLULAR" desc="The accessible text for the cellular button.">
     Cellular
   </message>
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_INFO" desc="The accessible text for the network info button.">
-    Network Info
+    Network info
   </message>
   <message name="IDS_ASH_STATUS_TRAY_IP" desc="The label for the IP address of the network:">
-    IP Address
+    IP address
   </message>
   <message name="IDS_ASH_STATUS_TRAY_IPV6" desc="The label for the IP address of the network:">
-    IPv6 Address
+    IPv6 address
   </message>
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_SETTINGS" desc="The label used in the settings entry in the network dialog.">
     Settings...
   </message>
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_PROXY_SETTINGS" desc="The label used in the proxy settings entry in the network dialog in the login screen.">
     Proxy...
   </message>
   <message name="IDS_ASH_STATUS_TRAY_NETWORK_TECHNOLOGY_ENFORCED_BY_POLICY" desc="The label used for tell users that this technology is disabled by the administrator">
     This network setting is disabled by the administrator.
   </message>
@@ skipping 88 matching lines @@
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_SHARE_BEING_HELPED" desc="label for screen sharing notification">
     Sharing control of your screen via Remote Assistance.
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SCREEN_SHARE_BEING_HELPED_NAME" desc="label for screen sharing notification with name">
     Sharing control of your screen with <ph name="HELPER_NAME">$1<ex>Walder Frey</ex></ph> via Remote Assistance.
   </message>
 
   <!-- Status tray audio strings. -->
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_FRONT_MIC" desc="label used for front microphone">
-    Front Microphone
+    Front microphone
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_HEADPHONE" desc="label used for audio headphone device">
     Headphone
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_INTERNAL_SPEAKER" desc="label used for internal audio speaker">
-    Speaker (Internal)
+    Speaker (internal)
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_INTERNAL_MIC" desc="label used for internal microphone">
-    Microphone (Internal)
+    Microphone (internal)
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_REAR_MIC" desc="label used for rear microphone">
-    Rear Microphone
+    Rear microphone
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_USB_DEVICE" desc="label used for usb audio device">
     <ph name="device_name">$1<ex>Headphone</ex></ph> (USB)
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_BLUETOOTH_DEVICE" desc="label used for bluetooth audio device">
     <ph name="device_name">$1<ex>Headphone</ex></ph> (Bluetooth)
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_HDMI_DEVICE" desc="label used for hdmi audio device">
     <ph name="device_name">$1<ex>Speaker</ex></ph> (HDMI/DP)
   </message>
   <message name="IDS_ASH_STATUS_TRAY_AUDIO_MIC_JACK_DEVICE" desc="label used for mic jack device">
-    Mic Jack
+    Mic jack
   </message>
 
   <message name="IDS_AURA_SET_DESKTOP_WALLPAPER" desc="The label used for change wallpaper in context menu">
     Set wallpaper...
   </message>
 
   <message name="IDS_ASH_STATUS_TRAY_SMS" desc="The label used in the status tray for SMS.">
     SMS
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SMS_MESSAGES" desc="The label used in the default status tray view for SMS with the number of messages.">
     SMS messages: <ph name="MESSAGE_COUNT">$1<ex>3</ex></ph>
   </message>
   <message name="IDS_ASH_STATUS_TRAY_SMS_NUMBER" desc="Sender for SMS messagees in the system tray.">
     SMS from <ph name="PHONE_NUMBER">$1<ex>08700 776655</ex></ph>
   </message>
   <message name="IDS_ASH_STATUS_TRAY_TRACING" desc="The status tray item indicating that performance tracing is running.">
     Performance tracing enabled
   </message>
   <message name="IDS_ASH_STATUS_TRAY_BRIGHTNESS" desc="The accessible text for the brightness slider.">
     Brightness
   </message>
   <message name="IDS_ASH_STATUS_TRAY_AUDIO" desc="The label used in audio detailed page bottom header of ash tray pop up.">
-    Audio Settings
+    Audio settings
   </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>
@@ skipping 274 matching lines @@
   <message name="IDS_ASH_SCREENSHOT_NOTIFICATION_TEXT_FAIL" desc="The text of the notification when taking a screenshot failed.">
     Failed to save screenshot
   </message>
   <message name="IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT" desc="The text of the popup when the user preses the exit shortcut in chrome-os.">
     Press Ctrl+Shift+Q twice to sign out.
   </message>
   <message name="IDS_ASH_SIGN_OUT_WARNING_POPUP_TEXT_ACCESSIBLE" desc="The message used by accessibility to indicate the content of the popup when the user preses the exit shortcut in chrome-os.">
     Press Control Shift Q twice to sign out.
   </message>
   <message name="IDS_ASH_LOGOUT_CONFIRMATION_TITLE" desc="Dialog title for the logout confirmation dialog.">
-    Exiting Session
+    Exiting session
   </message>
   <message name="IDS_ASH_LOGOUT_CONFIRMATION_WARNING" desc="The text for the logout confirmation dialog.">
     You will automatically be signed out in <ph name="LOGOUT_TIME_LEFT">$1<ex>5 seconds</ex></ph>.
   </message>
   <message name="IDS_ASH_LOGOUT_CONFIRMATION_WARNING_NOW" desc="The text for the logout confirmation dialog with no time left.">
     You will be signed out now.
   </message>
   <message name="IDS_ASH_LOGOUT_CONFIRMATION_BUTTON" desc="The text for okay button of the logout confirmation dialog.">
     Sign out now
   </message>
@@ skipping 42 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>