Switch on-demand update checks to the less-old GoogleUpdate3 API.

chrome/browser/ui/webui/help/help_handler.cc

Index: chrome/browser/ui/webui/help/help_handler.cc
diff --git a/chrome/browser/ui/webui/help/help_handler.cc b/chrome/browser/ui/webui/help/help_handler.cc
index 007980d818c2b6e957b29cfd20517a145f40f5a2..193c960b7430a617f000a9b7982c5fc79254b61a 100644
--- a/chrome/browser/ui/webui/help/help_handler.cc
+++ b/chrome/browser/ui/webui/help/help_handler.cc
@@ -145,8 +145,7 @@ std::string ReadFCCLabelText() {
 }  // namespace
 
 HelpHandler::HelpHandler()
-    : version_updater_(VersionUpdater::Create(nullptr)),
-      weak_factory_(this) {
+    : weak_factory_(this) {
 }
 
 HelpHandler::~HelpHandler() {
@@ -300,10 +299,7 @@ void HelpHandler::GetLocalizedValues(base::DictionaryValue* localized_strings) {
 }
 
 void HelpHandler::RegisterMessages() {
-#if defined(OS_CHROMEOS)
-  version_updater_.reset(
-      VersionUpdater::Create(web_ui()->GetWebContents()->GetBrowserContext()));
-#endif
+  version_updater_.reset(VersionUpdater::Create(web_ui()->GetWebContents()));
   registrar_.Add(this, chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
                  content::NotificationService::AllSources());