Surface button for loading stale cache copy on net error page.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index b918d7f12de5c97aa990243c56bacf92668be6df..2134c4d2779b931720fc2d1ead20ee1c85d6a890 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -8907,6 +8907,12 @@ The following plug-in is unresponsive: <ph name="PLUGIN_NAME">$1
       <message name="IDS_ERRORPAGES_BUTTON_RELOAD" desc="Label for the button on an error page to reload the page">
         Reload
       </message>
+      <message name="IDS_ERRORPAGES_BUTTON_LOAD_STALE" desc="Label for the button on an error page to load a stale entry from the cache">
+        Load Stale Local Copy
+      </message>
+      <message name="IDS_ERRORPAGES_BUTTON_LOAD_STALE_HELP" desc="Explanation for the BUTTON_LOAD_STALE button">
+        Load a known-to-be-out-of-date saved copy of this page.
+      </message>
       <message name="IDS_ERRORPAGES_BUTTON_DIAGNOSE" desc="Label for the button that invokes the connection diagnostic tool on the error page">
         Diagnose errors...
       </message>