Update extension install prompt to reflect withheld permissions

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 e1c2888a9e6c06d98019f2204b23b6b8d91ca7e7..3addcd7ef1e53ba74f4fe0e7e6fffe5304ebe1b2 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4186,6 +4186,9 @@ Make sure you do not expose any sensitive information.
       <message name="IDS_EXTENSION_PROMPT_CAN_ACCESS" desc="Second line in the content area of the extension or app permissions view dialog. Note that the exact wording is important. This should mean that the extension _can now_ access the listed privileges, because it has already been installed. This message appeared because the user must approve new permissions of the extension or app.">
         It can:
       </message>
+      <message name="IDS_EXTENSION_PROMPT_WITHHELD" desc="Header for withheld permissions warning on extension install.">
+        Warning: You've enabled the --scripts-require-action flag on this computer, which limits the capabilities of this extension. However, other devices may not support this flag or have it enabled. On these devices, this extension can also:
+      </message>
       <message name="IDS_EXTENSION_NO_SPECIAL_PERMISSIONS" desc="Shown when the app/extension requires no special permission">
         Has no special permissions.
       </message>