[MD settings] content settings add site button; layout fixes

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 1769 matching lines @@
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_BLOCK" desc="Label for add block sites in site settings.">
     Block
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SESSION_ONLY" desc="Label for sites in site settings allowing cookies for the current session only.">
     Clear on exit
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_EXCEPTIONS" desc="Label for exception sites in site settings.">
     Exceptions
   </message>
-  <message name="IDS_SETTINGS_SITE_SETTINGS_ADD_SITE" desc="Label for add site button in site settings.">
-    Add Site
-  </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SITE_URL" desc="Label for site URL text entry in site settings.">
     Site URL
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ALLOW_MENU" desc="Label for the menu item to allow permission for a particular site.">
     Allow
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_BLOCK_MENU" desc="Label for the menu item to block permission for a particular site.">
     Block
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_RESET_MENU" desc="Label for the menu item to remove the permission for a particular site (make it ask you again next time).">
@@ skipping 31 matching lines @@
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_COOKIE_REMOVE_ALL_SHOWN" desc="Label for the button to delete all visible cookies for a site.">
     Remove All Shown
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_COOKIE_REMOVE_DIALOG_TITLE" desc="Title of the dialog that warns about deleting all site data.">
     Clear site data
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SITE_REMOVE_DIALOG_TITLE" desc="Title of the dialog that warns about deleting all site data and resetting permissions.">
     Clear and reset site
   </message>
-  <message name="IDS_SETTINGS_SITE_SETTINGS_COOKIE_REMOVE_CONFIRMATION" desc="Text for the dialog that warns about deleting all site data.">
-    This will delete any data <ph name="SITE">$1<ex>www.example.com</ex></ph> stored on your device. Do you want to continue?
-  </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SITE_REMOVE_CONFIRMATION" desc="Text for the dialog that warns about deleting all site data and permissions.">
     This will delete any data <ph name="SITE">$1<ex>www.example.com</ex></ph> stored on your device, and reset any permissions you granted to run. Do you want to continue?
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_COOKIE_REMOVE_MULTIPLE" desc="Text for the dialog that warns about deleting all site data.">
     This will delete any data stored on your device for all the sites shown. Do you want to continue?
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_COOKIES_CLEAR_ALL" desc="Text for the button that clears all site data.">
     Clear all
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_SITE_CLEAR_ALL" desc="Text for the button that clears all site data and resets the site.">
@@ skipping 629 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>