Update two chromeos system dialogs to reuse more DialogDelegateView

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 5574 matching lines @@
   <!-- Platform verification UI -->
   <message name="IDS_PLATFORM_VERIFICATION_DIALOG_HEADLINE" desc="The label to describe what the dialog wants to confirm.">
     <ph name="DOMAIN">$1<ex>example.com</ex></ph> wants your device's identity to be verified, by Google, to determine eligibility for enhanced playback of protected media. <ph name="LEARN_MORE">$2<ex>Learn more</ex></ph>.
   </message>
 
   <!-- Multi-profiles mode -->
   <message name="IDS_MULTIPROFILES_INTRO_HEADLINE" desc="Describes which feature multi-profiles intro dialog presents.">
     Multiple sign-in
   </message>
   <message name="IDS_MULTIPROFILES_INTRO_MESSAGE" desc="Content of the multi-profiles intro dialog shown when the user adds another user in multi-profiles mode.">
     This feature allows you to access quickly any signed-in user without requiring a password.

[Daniel Erat, 2016/10/21 22:00:39]

"to access quickly any signed-in user" <-- yay awkward phrasing to avoid split
infinitive :-P

[Evan Stade, 2016/10/21 22:17:42]

I'm going to fix this because "to quickly access..." sounds 10x more fluent than
"to access quickly...", and because Star Trek is a better model to follow than
Strunk and White.

+
+Only use this feature with accounts you trust.
   </message>
   <message name="IDS_MULTIPROFILES_INTRO_EXPLANATION" desc="Content of the multi-profiles intro dialog shown when the user adds another user in multi-profiles mode.">

[Daniel Erat, 2016/10/21 22:00:39]

i think that this is unused now and can be deleted.

[Evan Stade, 2016/10/21 22:17:42]

done

-    Only use this feature with accounts you trust.
   </message>
   <message name="IDS_MULTIPROFILES_INTRO_NOSHOW_AGAIN" desc="In multi-profiles intro dialog, text for no-show-again option.">
     Got it, don't show me this again.
   </message>
   <message name="IDS_MULTIPROFILES_SESSION_ABORT_HEADLINE" desc="Describes that the current multi profile session ends because one user left.">
     Multiple sign-in has been disallowed for a user in this session
   </message>
   <message name="IDS_MULTIPROFILES_SESSION_ABORT_MESSAGE" desc="Content of the description that the current multi profile session ended because one user left.">
     An administrator has disallowed multiple sign-in for <ph name="USER_EMAIL">$1<ex>john@google.com</ex></ph>.
 All users must sign out to continue.
@@ skipping 755 matching lines @@
   <message name="IDS_FLAGS_ENABLE_EHV_INPUT_NAME" desc="Name of the about: flag for enabling emoji, handwriting and voice input on opt-in IME menu.">
     Emoji, handwriting and voice input on opt-in IME menu
     </message>
   <message name="IDS_FLAGS_ENABLE_EHV_INPUT_DESCRIPTION" desc="Description of the about: flag enabling emoji, handwriting and voice input on opt-in IME menu.">
     Enable access to emoji, handwriting and voice input form opt-in IME menu.
   </message>
   <message name="IDS_HATS_DONE_BUTTON_LABEL" desc="Label used for the done button at the end of survey">
     Done
   </message>
 </grit-part>