Update of the extension install UI:

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 2088 matching lines @@
         Reenable
       </message>
 
       <!-- Extension install prompt -->
       <message name="IDS_EXTENSION_PROMPT_TITLE" desc="Titlebar of the extension installation prompt window">
         Confirm Installation
       </message>
       <message name="IDS_EXTENSION_PROMPT_HEADING" desc="First bold line in the content area of the extension installation prompt. Asks the user if they want to install a particular extension.">
         Install "<ph name="EXTENSION_NAME">$1<ex>Gmail Checker</ex></ph>"?
       </message>
+
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_BROWSER" desc="Warning displayed in body of extension dialog when the extension requires access to browser APIs.">
+        This extension will have access to your browsing history.
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_SINGLE_HOST" desc="Warning displayed in body of extension dialog when the extension requires access to a single host.">
+        This extension will have access to your private data on <ph name="HOST">$1<ex>maps.google.com</ex></ph>
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_SINGLE_HOST_AND_BROWSER" desc="Warning displayed in body of extension dialog when the extension requires access to a single host and browser APIs.">
+        This extension will have access to your browsing history and private data on <ph name="HOST">$1<ex>maps.google.com</ex></ph>
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_MULTIPLE_HOSTS" desc="Warning displayed in body of extension dialog when the extension requires access to multiple hosts, but not every host.">
+        This extension will have access to your private data on multiple websites.
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_MULTIPLE_HOSTS_AND_BROWSER" desc="Warning displayed in body of extension dialog when the extension requires access to multiple hosts, but not every host, and browser APIs.">
+        This extension will have access to your browsing history and private data on multiple websites.
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_ALL_HOSTS" desc="Warning displayed in body of extension dialog when the extension requires access to all hosts.">
+        This extension will have access to your private data on all websites.
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_ALL_HOSTS_AND_BROWSER" desc="Warning displayed in body of extension dialog when the extension requires access to all hosts and browser APIs.">
+        This extension will have access to your browsing history and private data on all websites.
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_WARNING_NEW_FULL_ACCESS" desc="Warning displayed in body of extension dialog when the extension requires access the local machine.">
+        This extension will have full access to your computer and private data.
+      </message>
+
+      <!-- TODO(aa): Remove these old warning messages when all the platforms are switched to the new ones, above. -->
       <message name="IDS_EXTENSION_PROMPT_WARNING_1" desc="Humorous warning displayed in the extension install prompt that tells users that extensions have access to their computer and private data.">
         Extensions have access to your computer and private data. This means they could forward all your email to your spouse.
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_2" desc="Humorous warning displayed in the extension install prompt that tells users that extensions have access to their computer and private data.">
         Extensions have access to your computer and private data. They could send tweets or email on your behalf.
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_3" desc="Humorous warning displayed in the extension install prompt that tells users that extensions have access to their computer and private data.">
         Extensions can access your computer and private data. They could post unflattering pictures to your Wall.
       </message>
       <message name="IDS_EXTENSION_PROMPT_WARNING_SEVERE" desc="A bolded warning below the humorous warning that reiterates that users should only install extensions they trust">
         Only install extensions you trust.
       </message>
+
       <message name="IDS_EXTENSION_PROMPT_INSTALL_BUTTON" desc="Text for the install button on the extension install prompt">
         Install
       </message>
       <message name="IDS_EXTENSION_PROMPT_CANCEL_BUTTON" desc="Text for the cancel button on the extension install prompt">
         Cancel
       </message>
 
       <!-- Session Crashed Info Bar-->
       <message name="IDS_SESSION_CRASHED_VIEW_RESTORE_BUTTON" desc="Title of the restore button in the session crashed view.">
         Restore
@@ skipping 2697 matching lines @@
     <message name="IDS_PROFILE_IN_USE_LINUX" desc="Message shown when the browser cannot start because the profile is in use on a different host.">
       The profile appears to be in use by process <ph name="PROCESS_ID">$1<ex>12345</ex></ph> on host <ph name="HOST_NAME">$2<ex>example.com</ex></ph>.  If you are sure no other processes are using this profile, delete the file <ph name="LOCK_FILE">$3<ex>/home/user/.config/google-chrome/SingletonLock</ex></ph> and restart <ph name="PRODUCT_NAME">$4<ex>Google Chrome</ex></ph>.
     </message>
 
     <message translateable="false" name="IDS_GLEN" desc="Glen">
       Glen
     </message>
     </messages>
   </release>
 </grit>