Add an enrolling state for consumer management section in settings page.

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 5694 matching lines @@
     Failed to submit NDEF:
   </message>
 
   <!-- About consumer management service -->
   <message name="IDS_LOGIN_CONSUMER_MANAGEMENT_ENROLLMENT" desc="A message to show at the sign-in page when consumer management enrollment is in progress.">
     The owner must sign in to complete enrollment with Google Device Manager.
   </message>
   <message name="IDS_OPTIONS_DEVICE_CONTROL_SECTION_TITLE" desc="The title of the device control section in the settings page.">
     Device control
   </message>
-  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_DESCRIPTION" desc="Description of the consumer management enroll button in the settings page.">
+  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_DESCRIPTION" desc="Description of the consumer management service in the settings page.">
     Let Google help you remotely lock, erase, and locate your device.
   </message>
-  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_ENROLL_BUTTON" desc="The text of the consumer management enroll button in the settings page.">
+  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_ENROLL_BUTTON" desc="The text of the consumer management button in the settings page when the device is not enrolled.">
     Enroll
   </message>
-  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_UNENROLL_BUTTON" desc="The text of the consumer management unenroll button in the settings page.">
+  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_ENROLLING_BUTTON" desc="The text of the consumer management button in the settings page when enrollment is in progress.">
+    Enrolling...
+  </message>
+  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_UNENROLL_BUTTON" desc="The text of the consumer management button in the settings page when the device is enrolled.">
     Unenroll
   </message>
+  <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_UNENROLLING_BUTTON" desc="The text of the consumer management button in the settings page when unenrollment is in progress.">
+    Unenrolling...
+  </message>
   <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_OVERLAY" desc="The title of the consumer management overlay in the settings page used for both enrollment and unenrollment.">
     Consumer management
   </message>
   <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_OVERLAY_ENROLL_TITLE" desc="The title of the consumer management overlay in the settings page for enrollment.">
     Enroll Chromebook
   </message>
   <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_OVERLAY_ENROLL_MESSAGE" desc="The description of the consumer management overlay in the settings page for enrollment.">
     You are about to enroll this Chromebook with Google to enable the ability to remotely locate, wipe, and lock the device. This will require a reboot. Do you wish to continue?
   </message>
   <message name="IDS_OPTIONS_CONSUMER_MANAGEMENT_OVERLAY_ENROLL" desc="The button text of the consumer management overlay in the settings page for enrollment.">
@@ skipping 37 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>