Use OnceCallback on Mojo interfaces in //components/autofill

chrome/browser/password_manager/chrome_password_manager_client_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/password_manager/chrome_password_manager_client.h"
 
 #include <stdint.h>
 
 #include <string>
 
@@ skipping 159 matching lines @@
 
   void SetLoggingState(bool active) override {
     called_set_logging_state_ = true;
     logging_state_active_ = active;
   }
 
   void AutofillUsernameAndPasswordDataReceived(
       const autofill::FormsPredictionsMap& predictions) override {}
 
   void FindFocusedPasswordForm(
-      const FindFocusedPasswordFormCallback& callback) override {}
+      FindFocusedPasswordFormCallback callback) override {}
 
   // Records whether SetLoggingState() gets called.
   bool called_set_logging_state_;
   // Records data received via SetLoggingState() call.
   bool logging_state_active_;
 
   mojo::Binding<autofill::mojom::PasswordAutofillAgent> binding_;
 };
 
 }  // namespace
@@ skipping 425 matching lines @@
           web_contents()->GetBrowserContext(), nullptr));
   std::unique_ptr<MockChromePasswordManagerClient> client(
       new MockChromePasswordManagerClient(test_web_contents.get()));
   EXPECT_CALL(*client->password_protection_service(),
               MaybeStartLowReputationRequest(_, _, _))
       .Times(1);
   client->CheckSafeBrowsingReputation(GURL("http://foo.com/submit"),
                                       GURL("http://foo.com/iframe.html"));
 }
 #endif