Implemented UI for the meetings controller out-of-box.

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <message name="IDS_CHROMEBOOK" desc="The localized name for Chromebook.">
     Chromebook
   </message>
   <message name="IDS_CHROMEBOX" desc="The localized name for Chromebox">
@@ skipping 5491 matching lines @@
   <message name="IDS_ENTERPRISE_DEVICE_REQUISITION_PROMPT_TEXT" desc="Prompt shown in the device requisition prompt popup.">
     Use this device requisition when enrolling the device for enterprise management:
   </message>
   <message name="IDS_ENTERPRISE_DEVICE_REQUISITION_REMORA_PROMPT_TEXT" desc="Prompt shown in the device requisition remora prompt popup.">
     Are you sure you want to set up this device as a Chromebox for Meetings device?
   </message>
   <message name="IDS_ENTERPRISE_DEVICE_REQUISITION_SHARK_PROMPT_TEXT" desc="Prompt shown in the device requisition shark prompt popup.">
     Are you sure you want to set up this device as a "Shark"?
   </message>
   <message name="IDS_PAIRING_CONTROLLER_WELCOME" desc="Message shown on 'Chromebox for meetings' controller in the beginning of the setup process.">
-    Welcome to Chromebox for meeting
+    Welcome to Chromebox for meetings
   </message>
   <message name="IDS_PAIRING_CONTROLLER_SEARCHING" desc="Message shown on 'Chromebox for meetings' controller when it is searching for host devices.">
     Searching for nearby Chromeboxes...
   </message>
   <message name="IDS_PAIRING_NEED_HELP" desc="Text on the button launching help article about the 'Chromebox for meetings' setup process.">
     Need help?
   </message>
   <message name="IDS_PAIRING_CONTROLLER_TROUBLE_CONNECTING" desc="Title of the the dialog giving an advice on how to improve a connection between a host and a controller during the 'Chromebox for meeting' setup process.">
     Trouble connecting?
   </message>
@@ skipping 410 matching lines @@
   <message name="IDS_SET_TIME_BUTTON_CLOSE" desc="Text for the button to close the window.">
     Done
   </message>
   <message name="IDS_SET_TIME_DATE_LABEL" desc="Label for the date input element.">
     System date
   </message>
   <message name="IDS_SET_TIME_TIME_LABEL" desc="Label for the time input element.">
     System time
   </message>
 </grit-part>