Pass through installer errors from Google Update to the About box.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
===================================================================
--- chrome/app/generated_resources.grd	(revision 107092)
+++ chrome/app/generated_resources.grd	(working copy)
@@ -5098,6 +5098,14 @@
         Prevent this page from creating additional dialogs.
       </message>
 
+      <!-- About box strings -->
+      <message name="IDS_ABOUT_BOX_ERROR_DURING_UPDATE_CHECK" desc="The error label for errors that occurred while checking for updates in the About box.">
+        An error occurred while checking for updates: <ph name="ERROR">$1<ex>Unable to contact Google Update</ex></ph>
+      </message>
+      <message name="IDS_ABOUT_BOX_ERROR_COCREATE_FAILED" desc="The error message for the specific case when we cannot contact Google Update">
+        Unable to contact Google Update.
+      </message>
+
       <!-- "Before Unload" Dialog Box strings -->
       <message name="IDS_BEFOREUNLOAD_MESSAGEBOX_TITLE" desc="Title for the 'before unload' dialog.">
         Confirm Navigation