Make extension callbacks with auto-dismissing dialogs

components/app_modal/javascript_dialog_manager.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 "components/app_modal/javascript_dialog_manager.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 67 matching lines @@
 void JavaScriptDialogManager::SetNativeDialogFactory(
     std::unique_ptr<JavaScriptNativeDialogFactory> factory) {
   native_dialog_factory_ = std::move(factory);
 }
 
 void JavaScriptDialogManager::SetExtensionsClient(
     std::unique_ptr<JavaScriptDialogExtensionsClient> extensions_client) {
   extensions_client_ = std::move(extensions_client);
 }
 
+JavaScriptDialogExtensionsClient*
+JavaScriptDialogManager::GetExtensionsClient() {
+  return extensions_client_.get();
+}
+
 JavaScriptDialogManager::JavaScriptDialogManager()
     : extensions_client_(new DefaultExtensionsClient) {
 }
 
 JavaScriptDialogManager::~JavaScriptDialogManager() {
 }
 
 base::string16 JavaScriptDialogManager::GetTitle(
     content::WebContents* web_contents,
     const GURL& origin_url) {
@@ skipping 218 matching lines @@
   // lazy background page after the dialog closes. (Dialogs are closed before
   // their WebContents is destroyed so |web_contents| is still valid here.)
   extensions_client_->OnDialogClosed(web_contents);
 
   last_close_time_ = base::TimeTicks::Now();
 
   callback.Run(success, user_input);
 }
 
 }  // namespace app_modal