Show alert failure for reloading unpacked extensions with bad manifest

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 e81f342514a2e9ab4f8cc1315a19bb45e36f8712..6c789a69f5858cb40f86798130ab18064e9afeb8 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4763,7 +4763,7 @@ Make sure you do not expose any sensitive information.
           There were warnings when trying to install this extension:
         </message>
         <message name="IDS_EXTENSIONS_LOAD_ERROR_HEADING" desc="The title of the section that describes an extension load error.">
-          Extension Load Error
+          Error Loading Extension
         </message>
         <message name="IDS_EXTENSIONS_LOAD_ERROR_MESSAGE" desc="The message which tells the user that an extension failed to load.">
           Failed to load extension from:
@@ -4777,6 +4777,9 @@ Make sure you do not expose any sensitive information.
         <message name="IDS_EXTENSIONS_LOAD_COULD_NOT_LOAD_MANIFEST" desc="The text to indicate that the source of the extension's manifest failed to load.">
           Could not load manifest.
         </message>
+        <message name="IDS_EXTENSIONS_LOAD_ADDITIONAL_FAILURES" desc="The text displayed above additional extension load failures.">
+          Other extensions that failed to load:
+        </message>
         <message name="IDS_EXTENSIONS_ERRORS_SHOW_MORE" desc="The text which allows the user to display more errors for a given extension.">
           Show more...
         </message>