MacViews: add extension install dialog to MacViewsWebUIDialogs

chrome/browser/ui/views/browser_dialogs_views.cc

 // Copyright 2015 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/ui/browser_dialogs.h"
 
+#include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/ui/login/login_handler.h"
 
 // This file provides definitions of desktop browser dialog-creation methods for
 // all toolkit-views platforms other than Mac. It also provides the definitions
 // on Mac when mac_views_browser=1 is specified in GYP_DEFINES. The file is
 // excluded in a Mac Cocoa build: definitions under chrome/browser/ui/cocoa may
 // select at runtime whether to show a Cocoa dialog, or the toolkit-views dialog
 // provided by browser_dialogs.h.
 
 // static
 LoginHandler* LoginHandler::Create(net::AuthChallengeInfo* auth_info,
                                    net::URLRequest* request) {
   return chrome::CreateLoginHandlerViews(auth_info, request);
 }
 
 // static
 void BookmarkEditor::Show(gfx::NativeWindow parent_window,
                           Profile* profile,
                           const EditDetails& details,
                           Configuration configuration) {
   chrome::ShowBookmarkEditorViews(parent_window, profile, details,
                                   configuration);
 }
+
+// static
+ExtensionInstallPrompt::ShowDialogCallback
+ExtensionInstallPrompt::GetDefaultShowDialogCallback() {
+  return ExtensionInstallPrompt::GetViewsShowDialogCallback();
+}