Use BookmarkAppConfirmationView on Mac. Delete the NSAlert Mac uses currently.

chrome/test/base/test_browser_window.h

 // Copyright (c) 2012 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 CHROME_TEST_BASE_TEST_BROWSER_WINDOW_H_
 #define CHROME_TEST_BASE_TEST_BROWSER_WINDOW_H_
 
 #include "base/macros.h"
 #include "chrome/browser/download/test_download_shelf.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 73 matching lines @@
       const content::NativeWebKeyboardEvent& event) override;
   void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) override {}
   bool IsBookmarkBarVisible() const override;
   bool IsBookmarkBarAnimating() const override;
   bool IsTabStripEditable() const override;
   bool IsToolbarVisible() const override;
   bool IsToolbarShowing() const override;
   void ShowUpdateChromeDialog() override {}
   void ShowBookmarkBubble(const GURL& url, bool already_bookmarked) override {}
-  void ShowBookmarkAppBubble(
-      const WebApplicationInfo& web_app_info,
-      const ShowBookmarkAppBubbleCallback& callback) override {}
   autofill::SaveCardBubbleView* ShowSaveCreditCardBubble(
       content::WebContents* contents,
       autofill::SaveCardBubbleController* controller,
       bool user_gesture) override;
   ShowTranslateBubbleResult ShowTranslateBubble(
       content::WebContents* contents,
       translate::TranslateStep step,
       translate::TranslateErrors::Type error_type,
       bool is_user_gesture) override;
 #if BUILDFLAG(ENABLE_ONE_CLICK_SIGNIN)
@@ skipping 92 matching lines @@
 
 namespace chrome {
 
 // Helper that handle the lifetime of TestBrowserWindow instances.
 std::unique_ptr<Browser> CreateBrowserWithTestWindowForParams(
     Browser::CreateParams* params);
 
 }  // namespace chrome
 
 #endif  // CHROME_TEST_BASE_TEST_BROWSER_WINDOW_H_