Don't re-store deleted passwords on form submit on the Mac

chrome/browser/password_manager/password_store_mac_internal.h

Index: chrome/browser/password_manager/password_store_mac_internal.h
diff --git a/chrome/browser/password_manager/password_store_mac_internal.h b/chrome/browser/password_manager/password_store_mac_internal.h
index 223c20eaab79cbb6417a7d4a7f20a9937e3ecc2a..43ae5ad4d2a54a3f31ae49b7a350750f1c460903 100644
--- a/chrome/browser/password_manager/password_store_mac_internal.h
+++ b/chrome/browser/password_manager/password_store_mac_internal.h
@@ -40,6 +40,13 @@ class MacKeychainPasswordFormAdapter {
   webkit_glue::PasswordForm* PasswordExactlyMatchingForm(
       const webkit_glue::PasswordForm& query_form);
 
+  // Returns true if PasswordsMergeableWithForm would return any items. This is
+  // a separate method because calling PasswordsMergeableWithForm and checking
+  // the return count would require reading the passwords from the keychain,
+  // thus potentially triggering authorizaiton UI, whereas this won't.
+  bool HasPasswordsMergeableWithForm(
+      const webkit_glue::PasswordForm& query_form);
+
   // Returns all keychain items of types corresponding to password forms.
   std::vector<webkit_glue::PasswordForm*> GetAllPasswordFormPasswords();