Rename UserInfo method GetEmail to GetDisplayEmail.

components/user_manager/empty_user_info.h

-// 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.
-
-#ifndef COMPONENTS_USER_MANAGER_EMPTY_USER_INFO_H_
-#define COMPONENTS_USER_MANAGER_EMPTY_USER_INFO_H_
-
-#include <string>
-
-#include "base/macros.h"
-#include "base/strings/string16.h"
-#include "components/user_manager/user_info.h"
-#include "components/user_manager/user_manager_export.h"
-#include "ui/gfx/image/image_skia.h"
-
-namespace user_manager {
-
-// Trivial implementation of UserInfo interface which triggers
-// NOTIMPLEMENTED() for each method.
-class USER_MANAGER_EXPORT EmptyUserInfo : public UserInfo {
- public:
-  EmptyUserInfo();
-  ~EmptyUserInfo() override;
-
-  // UserInfo:
-  base::string16 GetDisplayName() const override;
-  base::string16 GetGivenName() const override;
-  std::string GetEmail() const override;
-  const AccountId& GetAccountId() const override;
-  const gfx::ImageSkia& GetImage() const override;
-
- private:
-  const gfx::ImageSkia null_image_;
-
-  DISALLOW_COPY_AND_ASSIGN(EmptyUserInfo);
-};
-
-}  // namespace user_manager
-
-#endif  // COMPONENTS_USER_MANAGER_EMPTY_USER_INFO_H_