[Password Manager] Show omnibox icon and anchored prompt once user start typing password

ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm

Index: ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm
diff --git a/ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm b/ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm
index 25fa3bd1930638cbde736c414c9085e3772baccc..f74738bfbde11781965d830207d3e0424167b37c 100644
--- a/ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm
+++ b/ios/chrome/browser/passwords/ios_chrome_password_manager_client.mm
@@ -91,6 +91,16 @@ bool IOSChromePasswordManagerClient::PromptUserToSaveOrUpdatePassword(
   return true;
 }
 
+void IOSChromePasswordManagerClient::ShowManualFallbackForSaving(
+    std::unique_ptr<password_manager::PasswordFormManager> form_to_save,
+    bool is_update) {
+  NOTIMPLEMENTED();
+}
+
+void IOSChromePasswordManagerClient::HideManualFallbackForSaving() {
+  NOTIMPLEMENTED();
+}
+
 void IOSChromePasswordManagerClient::AutomaticPasswordSave(
     std::unique_ptr<PasswordFormManager> saved_form_manager) {
   NOTIMPLEMENTED();