Show alert failure for reloading unpacked extensions with bad manifest

chrome/browser/ui/webui/extensions/extension_loader_handler.cc

Index: chrome/browser/ui/webui/extensions/extension_loader_handler.cc
diff --git a/chrome/browser/ui/webui/extensions/extension_loader_handler.cc b/chrome/browser/ui/webui/extensions/extension_loader_handler.cc
index 6e43177a4a3abd3fe57b684c2c362b5012a36f9b..19fcd77544ddd29e9757850d0afb39ec8ce2bb0d 100644
--- a/chrome/browser/ui/webui/extensions/extension_loader_handler.cc
+++ b/chrome/browser/ui/webui/extensions/extension_loader_handler.cc
@@ -131,8 +131,10 @@ void ExtensionLoaderHandler::FileHelper::MultiFilesSelected(
 ExtensionLoaderHandler::ExtensionLoaderHandler(Profile* profile)
     : profile_(profile),
       file_helper_(new FileHelper(this)),
-      weak_ptr_factory_(this) {
+      weak_ptr_factory_(this),
+      extension_error_reporter_observer_(this) {
   DCHECK(profile_);
+  extension_error_reporter_observer_.Add(ExtensionErrorReporter::GetInstance());
 }
 
 ExtensionLoaderHandler::~ExtensionLoaderHandler() {
@@ -182,9 +184,6 @@ void ExtensionLoaderHandler::LoadUnpackedExtensionImpl(
     const base::FilePath& file_path) {
   scoped_refptr<UnpackedInstaller> installer = UnpackedInstaller::Create(
       ExtensionSystem::Get(profile_)->extension_service());
-  installer->set_on_failure_callback(
-      base::Bind(&ExtensionLoaderHandler::OnLoadFailure,
-                 weak_ptr_factory_.GetWeakPtr()));
 
   // We do our own error handling, so we don't want a load failure to trigger
   // a dialog.