MD Settings: Privacy: Show dialog when changing do-not-track

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- Main Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_SECONDARY_USER_BANNER" desc="Banner displayed in settings page when the user is secondary in a multi-profile session.">
       Some settings belonging to <ph name="PRIMARY_EMAIL">$1<ex>john@google.com</ex></ph> are being shared with you. These settings only affect your account when using multiple sign-in.
     </message>
   </if>
 
@@ skipping 194 matching lines @@
     <message name="IDS_SETTINGS_ANDROID_APPS_TITLE" desc="The title of Google Play Store (Arc++ / Android Apps) section.">
       Google Play Store (beta)
     </message>
     <message name="IDS_SETTINGS_ANDROID_APPS_ENABLE" desc="Label for the checkbox that enables Google Play Store (Arc++) apps.">
       Enable Google Play Store on your Chromebook.
     </message>
     <message name="IDS_SETTINGS_ANDROID_APPS_MANAGE_APPS" desc="Label for launching Android apps settings.">
       Manage your Android preferences
     </message>
     <message name="IDS_SETTINGS_ANDROID_APPS_LEARN_MORE" desc="Link for more informaiton about installing Android apps on Chrome OS.">
-      Learn more.
+      Learn more
     </message>
 
     <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_TITLE" desc="Title of the confirmation dialog for disabling android apps.">
       Remove Android apps?
     </message>
     <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_MESSAGE" desc="Describes what will happen if the user opts out of android apps.">
       Apps you’ve downloaded from Google Play will be deleted from this Chromebook.
       <ph name="LINE_BREAKS1">&lt;br&gt;&lt;br&gt;</ph>
       Content you’ve purchased such as movies, TV shows, music, books, or other in-app purchases may also be deleted.
       <ph name="LINE_BREAKS2">&lt;br&gt;&lt;br&gt;</ph>
@@ skipping 1361 matching lines @@
   </message>
   <message name="IDS_SETTINGS_ENABLE_LOGGING" desc="The label of the checkbox to enable/disable crash and user metrics logging">
     Automatically send usage statistics and crash reports to Google
   </message>
   <message name="IDS_SETTINGS_ENABLE_LOGGING_DIAGNOSTIC_AND_USAGE_DATA" desc="The label of the checkbox to enable/disable diagnostic and user metrics logging">
     Automatically send diagnostic and usage data to Google
   </message>
   <message name="IDS_SETTINGS_ENABLE_DO_NOT_TRACK" desc="The label of the checkbox to enable/disable sending the 'Do Not track' header">
     Send a "Do Not Track" request with your browsing traffic
   </message>
+  <message name="IDS_SETTINGS_ENABLE_DO_NOT_TRACK_DIALOG_TITLE" desc="The title of a confirmation dialog that confirms that the user want to send the 'Do Not Track' header">
+    Do Not Track
+  </message>
+  <message name="IDS_SETTINGS_ENABLE_DO_NOT_TRACK_DIALOG_TEXT" desc="The text of a confirmation dialog that confirms that the user want to send the 'Do Not Track' header">
+    Enabling "Do Not Track" means that a request will be included with your browsing traffic. Any effect depends on whether a website responds to the request, and how the request is interpreted. For example, some websites may respond to this request by showing you ads that aren't based on other websites you've visited. Many websites will still collect and use your browsing data - for example to improve security, to provide content, services, ads and recommendations on their websites, and to generate reporting statistics. <ph name="BEGIN_LINK">&lt;a target="_blank" href="$1"&gt;</ph>Learn more<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+  </message>
   <message name="IDS_SETTINGS_ENABLE_CONTENT_PROTECTION_ATTESTATION" desc="description label for verified access about premium contents">
     Enable Verified Access
   </message>
   <message name="IDS_SETTINGS_WAKE_ON_WIFI_DESCRIPTION" desc="In the settings tab, the text next to the checkbox for enabling quickly reconnecting to known Wi-Fi SSIDs.">
     Keep Wi-Fi on during sleep
   </message>
   <message name="IDS_SETTINGS_MANAGE_CERTIFICATES" desc="Text for manage certificates button in Privacy options">
     Manage certificates
   </message>
   <message name="IDS_SETTINGS_MANAGE_CERTIFICATES_DESCRIPTION" desc="Secondary, continued explanation of how to manage SSL certificates and settings in Privacy options">
@@ skipping 1297 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>