[iOS Clean] Added HTTP authentication dialog support.

ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/BUILD.gn

Index: ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/BUILD.gn
diff --git a/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/BUILD.gn b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..bbbe32cabe0fba5284c5d145e1599c53526ab317
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/dialogs/http_auth_dialogs/BUILD.gn
@@ -0,0 +1,32 @@
+# Copyright 2016 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.
+
+source_set("http_auth_dialogs") {
+  sources = [
+    "http_auth_dialog_coordinator.h",
+    "http_auth_dialog_coordinator.mm",
+    "http_auth_dialog_mediator.h",
+    "http_auth_dialog_mediator.mm",
+    "http_auth_dialog_request.h",
+    "http_auth_dialog_request.mm",
+  ]
+
+  configs += [ "//build/config/compiler:enable_arc" ]
+
+  deps = [
+    "//components/strings",
+    "//ios/chrome/app/strings",
+    "//ios/clean/chrome/browser/ui/commands",
+    "//ios/clean/chrome/browser/ui/dialogs:dialogs_internal",
+    "//ios/clean/chrome/browser/ui/dialogs:dialogs_ui",
+    "//ios/clean/chrome/browser/ui/overlay_service",
+    "//ios/shared/chrome/browser/ui/browser_list",
+    "//ios/shared/chrome/browser/ui/commands",
+    "//ios/shared/chrome/browser/ui/coordinators",
+    "//ios/shared/chrome/browser/ui/dialogs",
+    "//ios/web",
+    "//ui/base",
+    "//url",
+  ]
+}