[iOS Clean] Added HTTP authentication dialog support.

ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h

Index: ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h
diff --git a/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h
new file mode 100644
index 0000000000000000000000000000000000000000..5468be05365dea3e526dfa84434250ae714f67e6
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/http_auth_dialog_mediator.h
@@ -0,0 +1,26 @@
+// Copyright 2017 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_CLEAN_CHROME_BROWSER_UI_DIALOGS_HTTP_AUTH_DIALOGS_HTTP_AUTH_DIALOG_MEDIATOR_H_
+#define IOS_CLEAN_CHROME_BROWSER_UI_DIALOGS_HTTP_AUTH_DIALOGS_HTTP_AUTH_DIALOG_MEDIATOR_H_
+
+#import "ios/clean/chrome/browser/ui/dialogs/dialog_mediator.h"
+
+@class HTTPAuthDialogState;
+
+// Class responsible for setting up a DialogConsumer for HTTP auth dialogs.
+@interface HTTPAuthDialogMediator : DialogMediator
+
+// Designated initializer for a mediator that uses |state| to provide datat to
+// consumers, and |dispatcher| to communicate commands.
+- (instancetype)initWithDispatcher:(CommandDispatcher*)dispatcher
+                             state:(HTTPAuthDialogState*)state
+    NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithDispatcher:(CommandDispatcher*)dispatcher
+    NS_UNAVAILABLE;
+- (instancetype)init NS_UNAVAILABLE;
+
+@end
+
+#endif  // IOS_CLEAN_CHROME_BROWSER_UI_DIALOGS_HTTP_AUTH_DIALOGS_HTTP_AUTH_DIALOG_MEDIATOR_H_