Implemented showing update bubble pop-up on password overriding

components/password_manager/core/browser/password_form_manager.h

Index: components/password_manager/core/browser/password_form_manager.h
diff --git a/components/password_manager/core/browser/password_form_manager.h b/components/password_manager/core/browser/password_form_manager.h
index e56cf3f82c8f5f17dc9a7e691f82fe553b465770..5bf31b93ee2649cb468b07ea0850cd5d174ca601 100644
--- a/components/password_manager/core/browser/password_form_manager.h
+++ b/components/password_manager/core/browser/password_form_manager.h
@@ -180,6 +180,8 @@ class PasswordFormManager : public PasswordStoreConsumer {
     has_generated_password_ = generated_password;
   }
 
+  bool password_overridden() const { return password_overridden_; }
+
   // Returns the pending credentials.
   const autofill::PasswordForm& pending_credentials() const {
     return pending_credentials_;
@@ -392,6 +394,9 @@ class PasswordFormManager : public PasswordStoreConsumer {
   // Whether this form has an auto generated password.
   bool has_generated_password_;
 
+  // Whether the saved password was overridden.
+  bool password_overridden_;
+
   // Set if the user has selected one of the other possible usernames in
   // |pending_credentials_|.
   base::string16 selected_username_;