Add security feature to ProvisionalSavePassword

components/password_manager/core/browser/password_manager.h

Index: components/password_manager/core/browser/password_manager.h
diff --git a/components/password_manager/core/browser/password_manager.h b/components/password_manager/core/browser/password_manager.h
index 467f6a886550e9321030a52d58c749ff60a3a927..3e90935f5d942646a3b5838136f3375af3d10128 100644
--- a/components/password_manager/core/browser/password_manager.h
+++ b/components/password_manager/core/browser/password_manager.h
@@ -210,6 +210,13 @@ class PasswordManager : public LoginModel {
   // non-blacklisted.
   bool CanProvisionalManagerSave();
 
+  // Returns true if there already exists a provisionally saved password form
+  // from the same domain as |form|, but with a different and secure scheme.
+  // This prevents users from unintentionally storing credentials, see
+  // http://crbug.com/571580 for details.
+  bool ShouldBlockPasswordForSameOriginButDifferentScheme(
+      const autofill::PasswordForm& form) const;
+
   // Returns true if the user needs to be prompted before a password can be
   // saved (instead of automatically saving
   // the password), based on inspecting the state of