Move web modal dialog manager files into the constrained_window component.

components/constrained_window/show_modal_dialog_views.cc

Index: components/constrained_window/show_modal_dialog_views.cc
diff --git a/components/constrained_window/show_modal_dialog_views.cc b/components/constrained_window/show_modal_dialog_views.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6265afeae05dd6f645f7ce068f028cb39a949f9f
--- /dev/null
+++ b/components/constrained_window/show_modal_dialog_views.cc
@@ -0,0 +1,28 @@
+// 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.
+
+#include "components/constrained_window/constrained_window_views.h"
+
+#include <memory>
+
+#include "components/constrained_window/native_web_contents_modal_dialog_manager_views.h"
+#include "components/web_modal/single_web_contents_dialog_manager.h"
+#include "components/web_modal/web_contents_modal_dialog_manager.h"
+#include "content/public/browser/web_contents.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace constrained_window {
+
+void ShowModalDialog(gfx::NativeWindow dialog,
+                     content::WebContents* initiator_web_contents) {
+  web_modal::WebContentsModalDialogManager* manager =
+      web_modal::WebContentsModalDialogManager::FromWebContents(
+          initiator_web_contents);
+  std::unique_ptr<web_modal::SingleWebContentsDialogManager> dialog_manager(
+      new constrained_window::NativeWebContentsModalDialogManagerViews(
+          dialog, manager));
+  manager->ShowDialogWithManager(dialog, std::move(dialog_manager));
+}
+
+}  // namespace constrained_window