Fix autofill popup controller key press callback registration

ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm

Index: ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm
diff --git a/ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm b/ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm
index d4dca208c06af0bba21b31f9ab1937d8af5a6a87..f926439e517d385a3d22a03c98ab8d46e127602c 100644
--- a/ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm
+++ b/ios/chrome/browser/passwords/ios_chrome_password_manager_driver.mm
@@ -82,3 +82,8 @@ IOSChromePasswordManagerDriver::GetPasswordAutofillManager() {
 void IOSChromePasswordManagerDriver::ForceSavePassword() {
   NOTIMPLEMENTED();
 }
+
+autofill::AutofillDriver* IOSChromePasswordManagerDriver::GetAutofillDriver() {
+  NOTIMPLEMENTED();
+  return nullptr;
+}