Improve UI for unpacked extensions failing to load

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 49690659aedbda82d73a452a19e807e8c8bbf638..670b663fa43cb83ade007f602bdfbd723cc7a1f2 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4784,6 +4784,21 @@ Make sure you do not expose any sensitive information.
         <message name="IDS_EXTENSIONS_INSTALL_WARNINGS" desc="The text which says that an extension has warnings when it was installed.">
           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
+        </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:
+        </message>
+        <message name="IDS_EXTENSIONS_LOAD_ERROR_RETRY" desc="The text of the button to retry loading an extension.">
+          Retry
+        </message>
+        <message name="IDS_EXTENSIONS_LOAD_ERROR_GIVE_UP" desc="The text of the button to give up on trying to load an extension.">
+          I give up
+        </message>
+        <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_ERRORS_SHOW_MORE" desc="The text which allows the user to display more errors for a given extension.">
           Show more...
         </message>