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

chrome/browser/extensions/bookmark_app_helper_unittest.cc

 // Copyright 2014 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 "chrome/browser/extensions/bookmark_app_helper.h"
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/banners/app_banner_settings_helper.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 259 matching lines @@
   std::map<int, BookmarkAppHelper::BitmapAndSource> size_map =
       BookmarkAppHelper::ResizeIconsAndGenerateMissing(
           downloaded, TestSizesToGenerate(), &web_app_info);
 
   ValidateIconsGeneratedAndResizedCorrectly(downloaded, size_map,
                                             TestSizesToGenerate(),
                                             expected_generated,
                                             expected_resized);
 }
 
-}  // namespace
-
 class TestBookmarkAppHelper : public BookmarkAppHelper {
  public:
   TestBookmarkAppHelper(ExtensionService* service,
                         WebApplicationInfo web_app_info,
                         content::WebContents* contents)
       : BookmarkAppHelper(service->profile(), web_app_info, contents) {}
 
   ~TestBookmarkAppHelper() override {}
 
   void CreationComplete(const extensions::Extension* extension,
@@ skipping 12 matching lines @@
   }
 
   const Extension* extension() { return extension_; }
 
  private:
   const Extension* extension_;
 
   DISALLOW_COPY_AND_ASSIGN(TestBookmarkAppHelper);
 };
 
+}  // namespace
+
 TEST_F(BookmarkAppHelperExtensionServiceTest, CreateBookmarkApp) {
   WebApplicationInfo web_app_info;
   web_app_info.app_url = GURL(kAppUrl);
   web_app_info.title = base::UTF8ToUTF16(kAppTitle);
   web_app_info.description = base::UTF8ToUTF16(kAppDescription);
 
   std::unique_ptr<content::WebContents> contents(
       content::WebContentsTester::CreateTestWebContents(profile(), nullptr));
   TestBookmarkAppHelper helper(service_, web_app_info, contents.get());
   helper.Create(base::Bind(&TestBookmarkAppHelper::CreationComplete,
@@ skipping 449 matching lines @@
   TestIconGeneration(kIconSizeTiny, 0, 3);
 }
 
 TEST_F(BookmarkAppHelperTest, IconsResizedWhenOnlyAGigantorOneIsProvided) {
   // When an enormous icon is provided, each desired icon size should be resized
   // from it, and no icons should be generated.
   TestIconGeneration(kIconSizeGigantor, 0, 3);
 }
 
 }  // namespace extensions