Site Settings Desktop: Implement Zoom Levels category.

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 1545 matching lines @@
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_UNSANDBOXED_PLUGINS" desc="Label for the unsandboxed plugin access site settings.">
     Unsandboxed plugin access
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_USB_DEVICES" desc="Label for the USB devices in site settings.">
     USB devices
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_FULLSCREEN" desc="Label for the fullscreen site settings.">
     Fullscreen
   </message>
+  <message name="IDS_SETTINGS_SITE_SETTINGS_ZOOM_LEVELS" desc="Label for the Zoom levels category in site settings.">
+    Zoom levels
+  </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_MAY_SAVE_COOKIES" desc="Label for the cookies option description site settings.">
     Sites can save and read cookie data
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ASK_FIRST" desc="Label for ask first option in site settings.">
     Ask first
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ASK_FIRST_RECOMMENDED" desc="The 'ask first' label in site settings -- a recommended setting for some categories, such as when sites want to use Full Screen.">
     Ask first (recommended)
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_ASK_BEFORE_ACCESSING" desc="The 'ask before accessing' label in site settings.">
@@ skipping 175 matching lines @@
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_INCOGNITO_ONLY" desc="A label for the checkbox to make the rule apply to the current incognito session only.">
     Current incognito session only
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_INCOGNITO" desc="A label for a site rule that only applies to the current incognito session.">
     Current incognito session
   </message>
   <message name="IDS_SETTINGS_SITE_SETTINGS_INCOGNITO_EMBEDDED" desc="A label for a site rule that specifies an embedded origin and only applies to the current incognito session.">
     Current incognito session (<ph name="EMBEDDING">$1<ex>embedded on google.com</ex></ph>)
   </message>
+  <message name="IDS_SETTINGS_SITE_SETTINGS_NO_ZOOMED_SITES" desc="A label explaining that no sites have a configured zoom in/out value.">
+    No sites have been zoomed in or out.
+  </message>
 
   <!-- Sync / People Page -->
   <message name="IDS_SETTINGS_PEOPLE" desc="Name of the settings page which manages Chrome's signed-in Google profile.">
     People
   </message>
   <message name="IDS_SETTINGS_PEOPLE_MANAGE_OTHER_PEOPLE" desc="Label for the button that opens the multi-profile user manager.">
     Manage other people
   </message>
   <message name="IDS_SETTINGS_PEOPLE_MANAGE_SUPERVISED_USERS" desc="Label for the button that opens the supervised users dashboard.">
     Manage supervised users
@@ skipping 510 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>