Move UserInfo to user_manager.

ash/session/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 ASH_SESSION_USER_INFO_H_
-#define ASH_SESSION_USER_INFO_H_
-
-#include <string>
-
-#include "ash/ash_export.h"
-#include "base/strings/string16.h"
-
-namespace gfx {
-class ImageSkia;
-}
-
-namespace ash {
-
-// A class that represents user related info.
-class ASH_EXPORT UserInfo {
- public:
-  virtual ~UserInfo() {}
-
-  // Gets the display name for the user.
-  virtual base::string16 GetDisplayName() const = 0;
-
-  // Gets the given name of the user.
-  virtual base::string16 GetGivenName() const = 0;
-
-  // Gets the display email address for the user.
-  // The display email address might contains some periods in the email name
-  // as well as capitalized letters. For example: "Foo.Bar@mock.com".
-  virtual std::string GetEmail() const = 0;
-
-  // Gets the user id (sanitized email address) for the user.
-  // The function would return something like "foobar@mock.com".
-  virtual std::string GetUserID() const = 0;
-
-  // Gets the avatar image for the user.
-  virtual const gfx::ImageSkia& GetImage() const = 0;
-};
-
-}  // namespace ash
-
-#endif  // ASH_SESSION_USER_INFO_H_