Show a warning when the history files can't be read correctly....

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 5046 matching lines @@
 
       <message name="IDS_OPTIONS_RESET" desc="The label of the 'Reset all settings to defaults' button">
         Reset to defaults
       </message>
       <message name="IDS_OPTIONS_RESET_OKLABEL" desc="The label of the OK button in the 'Reset Chrome options' confirmation dialog box">
         Reset to defaults
       </message>
       <message name="IDS_OPTIONS_RESET_CANCELLABEL" desc="The label of the Cancel button in the 'Reset Chrome options' confirmation dialog box">
         Don't reset
       </message>
+      
+      <!-- General app failure messages -->
+      <message name="IDS_COULDNT_OPEN_PROFILE_ERROR" desc="Error displayed on startup when the profile can not be opened correctly due to problems reading or writing files in it">
+        Your profile could not be opened correctly.\n\nSome features may be unavailable.  Please check that the profile exists and you have permission to read and write its contents.
+      </message>
 
       <!-- Can't write to user data directory dialog -->
       <message name="IDS_CANT_WRITE_USER_DIRECTORY_TITLE" desc="Title of dialog that is displayed when we can't create a directory for this user.">
         Failed To Create Data Directory
       </message>
       <message name="IDS_CANT_WRITE_USER_DIRECTORY_CHOOSE_DIRECTORY_BUTTON" desc="Text on button that opens another dialog to choose a new directory for user data.">
         Choose Another Directory...
       </message>
 
       <!-- User data directory profiles dialog -->
@@ skipping 728 matching lines @@
       <message name="IDS_STATUSBAR_BATTERY_IS_CHARGED" desc="In the power menu button, the battery is charged message.">
         Battery is charged
       </message>
       <message name="IDS_COMPACT_NAVBAR" desc="The menu item on the app menu to toggle compact navigation bar">
         Toggle Compact Navigation Bar
       </message>
     </if>
     </messages>
   </release>
 </grit>