MacViews: Unify web contents modal dialog types

chrome/browser/ui/cocoa/web_contents_modal_dialog_manager_cocoa.mm

-// Copyright (c) 2013 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/web_modal/web_contents_modal_dialog_manager.h"
-
-#include "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
-#include "components/web_modal/single_web_contents_dialog_manager.h"
-
-using web_modal::NativeWebContentsModalDialog;
-
-namespace {
-
-class NativeWebContentsModalDialogManagerCocoa
-    : public web_modal::SingleWebContentsDialogManager {
- public:
-  NativeWebContentsModalDialogManagerCocoa(
-      NativeWebContentsModalDialog dialog)
-      : dialog_(dialog) {
-  }
-
-  ~NativeWebContentsModalDialogManagerCocoa() override {}
-
-  // SingleWebContentsDialogManager overrides
-  void Show() override {
-    GetConstrainedWindowMac(dialog())->ShowWebContentsModalDialog();
-  }
-
-  void Hide() override {}
-
-  void Close() override {
-    GetConstrainedWindowMac(dialog())->CloseWebContentsModalDialog();
-  }
-
-  void Focus() override {
-    GetConstrainedWindowMac(dialog())->FocusWebContentsModalDialog();
-  }
-
-  void Pulse() override {
-    GetConstrainedWindowMac(dialog())->PulseWebContentsModalDialog();
-  }
-
-  void HostChanged(web_modal::WebContentsModalDialogHost* new_host) override {}
-
-  NativeWebContentsModalDialog dialog() override { return dialog_; }
-
- private:
-  static ConstrainedWindowMac* GetConstrainedWindowMac(
-      NativeWebContentsModalDialog dialog) {
-    return static_cast<ConstrainedWindowMac*>(dialog);
-  }
-
-  // In mac this is a pointer to a ConstrainedWindowMac.
-  // TODO(gbillock): Replace this casting system with a more typesafe call path.
-  NativeWebContentsModalDialog dialog_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeWebContentsModalDialogManagerCocoa);
-};
-
-}  // namespace
-
-namespace web_modal {
-
-SingleWebContentsDialogManager*
-    WebContentsModalDialogManager::CreateNativeWebModalManager(
-        NativeWebContentsModalDialog dialog,
-        SingleWebContentsDialogManagerDelegate* native_delegate) {
-  return new NativeWebContentsModalDialogManagerCocoa(dialog);
-}
-
-}  // namespace web_modal