Implement FeatureProvider for ExtensionAPI.

chrome/browser/extensions/extension_event_router.cc

Index: chrome/browser/extensions/extension_event_router.cc
diff --git a/chrome/browser/extensions/extension_event_router.cc b/chrome/browser/extensions/extension_event_router.cc
index cfe5fec5eff363a9b22c0e945cef8e8a4d315d38..66e48a34210dbfe105c5f17f891e74f6852095ca 100644
--- a/chrome/browser/extensions/extension_event_router.cc
+++ b/chrome/browser/extensions/extension_event_router.cc
@@ -317,7 +317,7 @@ void ExtensionEventRouter::DispatchEventToListener(
       listener_profile->GetExtensionService()->process_map();
   // If the event is privileged, only send to extension processes. Otherwise,
   // it's OK to send to normal renderers (e.g., for content scripts).
-  if (ExtensionAPI::GetInstance()->IsPrivileged(event->event_name) &&
+  if (ExtensionAPI::GetSharedInstance()->IsPrivileged(event->event_name) &&
       !process_map->Contains(extension->id(), listener.process->GetID())) {
     return;
   }