Add indication of camera use on SAML webcam logins

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>
   <!-- Idle logout dialog for retail mode -->
   <message name="IDS_IDLE_LOGOUT_TITLE" desc="Dialog title for the idle logout dialog. Used in retail mode only.">
     Are you still there?
   </message>
@@ skipping 1622 matching lines @@
   </message>
   <message name="IDS_LOGIN_UNRECOVERABLE_CRYPTOHOME_ERROR_CONTINUE" desc="Label of the button to continue with re-creating cryptohome for the fatal cryptohome error dialog box">
     Continue
   </message>
   <message name="IDS_LOGIN_UNRECOVERABLE_CRYPTOHOME_ERROR_WAIT_MESSAGE" desc="Message to show when the fatal cryptohome error dialog box is waiting for user profile re-creation to be closed.">
     Re-creating profile, please wait...
   </message>
   <message name="IDS_LOGIN_SAML_NOTICE" desc="Text message displayed above SAML portal to early indicate that the user is being redirected to another sign-in provider. This is the version of the string used in the GAIA flow.">
     This sign-in service is hosted by <ph name="SAML_DOMAIN">$1<ex>saml.com</ex></ph>
   </message>
+  <message name="IDS_LOGIN_SAML_NOTICE_WITH_VIDEO" desc="Text message displayed above SAML portal to early indicate that the user is being redirected to another sign-in provider which has requested video media access.">
+    This sign-in service, hosted by <ph name="SAML_DOMAIN">$1<ex>saml.com</ex></ph>, is using your camera.

[dskaram1, 2016/05/13 14:59:10]

From UI review, preference is for saying "accessing your camera" vs. "using your
camera" to retain consistency with how Chrome browser says it.

[Kevin Cernekee, 2016/05/13 18:39:04]

Done.

+  </message>
   <message name="IDS_LOGIN_CONFIRM_PASSWORD_TITLE" desc="Title for the confirm password dialog.">
     Please re-enter your password to update your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph> profile.
   </message>
   <message name="IDS_LOGIN_CONFIRM_PASSWORD_LABEL" desc="Label for the password field on the confirm password dialog.">
     Confirm your password
   </message>
   <message name="IDS_LOGIN_CONFIRM_PASSWORD_INCORRECT_PASSWORD" desc="Error that is shown when incorrect password was supplied.">
     Incorrect password
   </message>
   <message name="IDS_LOGIN_ACCOUNT_SETUP_CANCEL_DIALOG_TITLE" desc="Text to show in confirmation cancel dialog.">
@@ skipping 4933 matching lines @@
   <message name="IDS_ARC_SERVER_COMMUNICATION_ERROR" desc="Android sign-in error because of server communication error">
     Server communication error
   </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_NAME" desc="Name of the about: flag for enabling opt-in IME menu.">
     Enable opt-in IME menu
     </message>
   <message name="IDS_FLAGS_ENABLE_IME_MENU_DESCRIPTION" desc="Description of the about: flag for enabling opt-in IME menu.">
     Enable access to the new IME menu in the Language Settings page.
   </message>
 </grit-part>