Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/extensions_api_client.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 "extensions/browser/api/extensions_api_client.h"
 
 #include "base/logging.h"
 #include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest_delegate.h"
 #include "extensions/browser/guest_view/web_view/web_view_permission_helper_delegate.h"
 
 namespace extensions {
 class AppViewGuestDelegate;
 
 namespace {
-ExtensionsAPIClient* g_instance = NULL;
+ExtensionsAPIClient* g_instance = nullptr;
 }  // namespace
 
 ExtensionsAPIClient::ExtensionsAPIClient() { g_instance = this; }
 
-ExtensionsAPIClient::~ExtensionsAPIClient() { g_instance = NULL; }
+ExtensionsAPIClient::~ExtensionsAPIClient() {
+  g_instance = nullptr;
+}
 
 // static
 ExtensionsAPIClient* ExtensionsAPIClient::Get() { return g_instance; }
 
 void ExtensionsAPIClient::AddAdditionalValueStoreCaches(
     content::BrowserContext* context,
     const scoped_refptr<SettingsStorageFactory>& factory,
     const scoped_refptr<ObserverListThreadSafe<SettingsObserver> >& observers,
     std::map<settings_namespace::Namespace, ValueStoreCache*>* caches) {}
 
 AppViewGuestDelegate* ExtensionsAPIClient::CreateAppViewGuestDelegate() const {
-  return NULL;
+  return nullptr;
 }
 
 ExtensionOptionsGuestDelegate*
 ExtensionsAPIClient::CreateExtensionOptionsGuestDelegate(
     ExtensionOptionsGuest* guest) const {
-  return NULL;
+  return nullptr;
 }
 
 scoped_ptr<MimeHandlerViewGuestDelegate>
 ExtensionsAPIClient::CreateMimeHandlerViewGuestDelegate(
     MimeHandlerViewGuest* guest) const {
   return scoped_ptr<MimeHandlerViewGuestDelegate>();
 }
 
 WebViewGuestDelegate* ExtensionsAPIClient::CreateWebViewGuestDelegate(
     WebViewGuest* web_view_guest) const {
-  return NULL;
+  return nullptr;
 }
 
 WebViewPermissionHelperDelegate* ExtensionsAPIClient::
     CreateWebViewPermissionHelperDelegate(
         WebViewPermissionHelper* web_view_permission_helper) const {
   return new WebViewPermissionHelperDelegate(web_view_permission_helper);
 }
 
 scoped_refptr<RulesRegistry> ExtensionsAPIClient::GetRulesRegistry(
     content::BrowserContext* browser_context,
     const RulesRegistry::WebViewKey& webview_key,
     const std::string& event_name) {
   return scoped_refptr<RulesRegistry>();
 }
 
 }  // namespace extensions