Update the text for the Page Info bubble for internal pages.

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 517 matching lines @@
       </message>
       <message name="IDS_CONFLICTS_CHECK_WARNING_SUSPECTED" desc="Warning label on the compatibility page">
         A module with the same name has been known to conflict with Chromium.
       </message>
       <!-- chrome://crashes strings -->
       <message name="IDS_CRASHES_DISABLED_MESSAGE" desc="The explanatory message for chrome://crashes when crash reporting is disabled">
         Crash reporting is not available in Chromium.
       </message>
       <!-- Page Info bubble -->
       <message name="IDS_PAGE_INFO_INTERNAL_PAGE" desc="Message to display in the page info bubble when the page you are on is a chrome:// page or about:something.">
-        This page was generated by Chromium.
+        You are viewing a secure Chromium page.
       </message>
       <!-- Print Preview -->
       <message name="IDS_PRINT_PREVIEW_NO_PLUGIN" desc="Message to display when the PDF viewer is missing.">
         Chromium does not include the PDF viewer which is required for Print Preview to function.
       </message>
       <message name="IDS_PRINT_PREVIEW_NATIVE_DIALOG" desc="Option offering the user to open the native print dialog, displayed when the PDF viewer is missing.">
         Launch native print dialog
       </message>
 
       <if expr="os == 'darwin'">
@@ skipping 29 matching lines @@
         <message name="IDS_UTILITY_APP_NAME" desc="The utility application's name.  Should contain the Chrome application name (IDS_PRODUCT_NAME). Example: Google Chrome Utility.">
           Chromium Utility
         </message>
         <message name="IDS_SHORT_UTILITY_APP_NAME" desc="The utility application's short name, used for the Mac's application menu, activity monitor, etc. Example: Chrome Utility, not Google Chrome Utility.">
           Chromium Utility
         </message>
       </if>
     </messages>
   </release>
 </grit>