cros: Remove unused method

chrome/browser/chromeos/login/enrollment/mock_enrollment_screen.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_MOCK_ENROLLMENT_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_MOCK_ENROLLMENT_SCREEN_H_
 
 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen.h"
 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen_actor.h"
 #include "chrome/browser/chromeos/policy/enrollment_config.h"
@@ skipping 11 matching lines @@
 };
 
 class MockEnrollmentScreenActor
     : public EnrollmentScreenActor {
  public:
   MockEnrollmentScreenActor();
   virtual ~MockEnrollmentScreenActor();
 
   MOCK_METHOD2(SetParameters,
                void(Controller*, const policy::EnrollmentConfig& config));
-  MOCK_METHOD0(PrepareToShow, void());
   MOCK_METHOD0(Show, void());
   MOCK_METHOD0(Hide, void());
   MOCK_METHOD0(ShowSigninScreen, void());
   MOCK_METHOD0(ShowAdJoin, void());
   MOCK_METHOD2(ShowAttributePromptScreen,
                void(const std::string& asset_id, const std::string& location));
   MOCK_METHOD1(ShowAttestationBasedEnrollmentSuccessScreen,
                void(const std::string& enterprise_domain));
   MOCK_METHOD0(ShowEnrollmentSpinnerScreen, void());
   MOCK_METHOD1(ShowAuthError, void(const GoogleServiceAuthError&));
   MOCK_METHOD1(ShowOtherError, void(EnterpriseEnrollmentHelper::OtherError));
   MOCK_METHOD1(ShowEnrollmentStatus, void(policy::EnrollmentStatus status));
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_MOCK_ENROLLMENT_SCREEN_H_