Fix loading success.html at the end of chrome://chrome-signin flow

extensions/common/manifest_handler.cc

Index: extensions/common/manifest_handler.cc
diff --git a/extensions/common/manifest_handler.cc b/extensions/common/manifest_handler.cc
index 24ab931e30da51b0163587a01ab8762849e2d4fa..d928459d293d8490ce80d9cda02f7a33e10d6c56 100644
--- a/extensions/common/manifest_handler.cc
+++ b/extensions/common/manifest_handler.cc
@@ -131,13 +131,19 @@ void ManifestHandlerRegistry::RegisterManifestHandler(
 
 bool ManifestHandlerRegistry::ParseExtension(Extension* extension,
                                              base::string16* error) {
+  LOG(ERROR) << "ParseExtension " << extension->id();
   std::map<int, ManifestHandler*> handlers_by_priority;
   for (ManifestHandlerMap::iterator iter = handlers_.begin();
        iter != handlers_.end(); ++iter) {
     ManifestHandler* handler = iter->second.get();
     if (extension->manifest()->HasPath(iter->first) ||
         handler->AlwaysParseForType(extension->GetType())) {
+      LOG(ERROR) << "ParseExtension " << extension->id() << " using handler "
+                 << iter->first;
       handlers_by_priority[priority_map_[handler]] = handler;
+    } else {
+      LOG(ERROR) << "ParseExtension " << extension->id() << " skip handler "
+                 << iter->first;
     }
   }
   for (std::map<int, ManifestHandler*>::iterator iter =