Implement end-preview flow with views

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 These strings will not be translated and only english versions will
 be available for now. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 817 matching lines @@
       <!-- Tutorial card in the avatar menu bubble -->
       <message name="IDS_PROFILES_PREVIEW_ENABLED_TUTORIAL_CONTENT_TEXT" desc="The main content of the tutorial card in the avatar menu bubble view shown when user enables the new profile management preview.">
         You can add your other Google Accounts and lock your Chromium below.
       </message>
       <message name="IDS_PROFILES_PREVIEW_TUTORIAL_TITLE" desc="The title of the tutorial card in the avatar menu bubble view that asks the user to preview the new profile management UI.">
         Preview the new Chromium
       </message>
       <message name="IDS_PROFILES_PREVIEW_TUTORIAL_CONTENT_TEXT" desc="The main content of the tutorial card in the avatar menu bubble view that asks the user to preview the new profile management UI.">
        Try the new way to use Chromium with your Google Account and on shared computers.
       </message>
+      <message name="IDS_PROFILES_FEEDBACK_TUTORIAL_CONTENT_TEXT" desc="The main content of the tutorial card in the avatar menu bubble view that asks the user to send feedback about the new profile management UI.">
+       You're previewing the new Chromium.
+      </message>
 
       <!-- Account removal view in the avatar menu bubble -->
       <message name="IDS_PROFILES_ACCOUNT_REMOVAL_TEXT" desc="Main text of the account removal view when removing a secondary account.">
         To remove your account, Chromium needs to restart. Make sure you've saved any open work before continuing.
       </message>
       <message name="IDS_PROFILES_PRIMARY_ACCOUNT_REMOVAL_TEXT" desc="Main text of the account removal view when removing a primary account.">
         You're using <ph name="PROFILE_EMAIL">$1<ex>jessica@gmail.com</ex></ph> to sync your Chromium stuff. To update your sync preference or to use Chromium without a Google account, visit <ph name="SETTINGS_LINK">$2<ex>settings</ex></ph>.
       </message>
 
+      <!-- End-preview view in the avatar menu bubble -->
+      <message name="IDS_PROFILES_END_PREVIEW_TEXT" desc="Main text of the end-preview view.">
+        Thanks for trying out the new Chromium. Chromium needs to restart to make sure you've saved any open work before continuing.
+      </message>
+
       <!-- Sync Promo New Tab Page bubble strings -->
       <message name="IDS_SYNC_PROMO_NTP_BUBBLE_MESSAGE_NEW" desc="The body of the sync promo NTP bubble.">
         Now that you're signed in, you can get your tabs, bookmarks and other Chromium stuff across your laptop, phone and tablet. You will also receive more relevant suggestions and features on Google services.
       </message>
 
       <!-- One click sign-in infobar -->
       <if expr="not chromeos">
         <!-- New one-click sign-in dialog contents for SAML support -->
         <message name="IDS_ONE_CLICK_SIGNIN_DIALOG_TITLE_NEW" desc="The title of the modal dialog window that opens when the user chooses to use one click sign-in.">
           You're signed in to Chromium!
@@ skipping 343 matching lines @@
         <message name="IDS_NEW_TAB_OTR_EXTENSIONS_MESSAGE"
                  desc="Explanation in a new OTR window that extensions have been disabled while in OTR.">
           Because Chromium does not control how extensions handle your personal data, all extensions have been disabled for incognito windows. You can reenable them individually in the
           <ph name="BEGIN_LINK">&lt;a href="$1"&gt;</ph>extensions manager<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>.
         </message>
       </if>
 
     </messages>
   </release>
 </grit>