[iOS Clean] Created OverlayService.

ios/chrome/browser/ui/dialogs/nsurl_protection_space_util.h

-// Copyright 2015 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 IOS_CHROME_BROWSER_UI_DIALOGS_NSURL_PROTECTION_SPACE_UTIL_H_
-#define IOS_CHROME_BROWSER_UI_DIALOGS_NSURL_PROTECTION_SPACE_UTIL_H_
-
-#import <Foundation/Foundation.h>
-
-class GURL;
-
-namespace ios_internal {
-namespace nsurlprotectionspace_util {
-
-// Information describing dialog requester used as dialog subtitle.
-NSString* MessageForHTTPAuth(NSURLProtectionSpace* protectionSpace);
-
-// Returns YES if dialog can be shown for set |protectionSpace|.
-BOOL CanShow(NSURLProtectionSpace* protectionSpace);
-
-// String represending authentication requester (origin URL or hostname).
-NSString* RequesterIdentity(NSURLProtectionSpace* protectionSpace);
-
-// URL origin of the dialog requester.
-GURL RequesterOrigin(NSURLProtectionSpace* protectionSpace);
-
-}  // namespace nsurlprotectionspace_util
-}  // namespace ios_internal
-
-#endif  // IOS_CHROME_BROWSER_UI_DIALOGS_NSURL_PROTECTION_SPACE_UTIL_H_