[Password Manager] Unfriend PasswordAutofillAgentTest from PasswordAutofillAgent (clean-up).

components/autofill/content/renderer/test_password_autofill_agent.h

 // Copyright 2013 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.
 
 #ifndef COMPONENTS_AUTOFILL_CONTENT_RENDERER_TEST_PASSWORD_AUTOFILL_AGENT_H_
 #define COMPONENTS_AUTOFILL_CONTENT_RENDERER_TEST_PASSWORD_AUTOFILL_AGENT_H_
 
 #include "components/autofill/content/renderer/password_autofill_agent.h"
 
 namespace autofill {
 
 class TestPasswordAutofillAgent : public PasswordAutofillAgent {
  public:
   explicit TestPasswordAutofillAgent(content::RenderView* render_view);
   virtual ~TestPasswordAutofillAgent();
 
+  // PasswordAutofillAgent:
+  using PasswordAutofillAgent::SendPasswordForms;
+  using PasswordAutofillAgent::OnMessageReceived;
+  using PasswordAutofillAgent::WillSubmitForm;
+
  private:
   // Always returns true. This allows browser tests with "data: " URL scheme to
   // work with the password manager.
   // PasswordAutofillAgent:
   virtual bool OriginCanAccessPasswordManager(
       const blink::WebSecurityOrigin& origin) OVERRIDE;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_RENDERER_TEST_PASSWORD_AUTOFILL_AGENT_H_