Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/permissions_updater.cc

 // Copyright (c) 2012 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 "chrome/browser/extensions/permissions_updater.h"
 
 #include "base/json/json_writer.h"
 #include "base/memory/ref_counted.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 322 matching lines @@
     const char* event_name,
     const PermissionSet* changed_permissions) {
   EventRouter* event_router = EventRouter::Get(browser_context_);
   if (!event_router)
     return;
 
   scoped_ptr<base::ListValue> value(new base::ListValue());
   scoped_ptr<api::permissions::Permissions> permissions =
       PackPermissionSet(changed_permissions);
   value->Append(permissions->ToValue().release());
-  scoped_ptr<Event> event(new Event(event_name, value.Pass()));
+  scoped_ptr<Event> event(new Event(events::UNKNOWN, event_name, value.Pass()));
   event->restrict_to_browser_context = browser_context_;
   event_router->DispatchEventToExtension(extension_id, event.Pass());
 }
 
 void PermissionsUpdater::NotifyPermissionsUpdated(
     EventType event_type,
     const Extension* extension,
     const PermissionSet* changed) {
   DCHECK((init_flag_ & INIT_FLAG_TRANSIENT) == 0);
   if (!changed || changed->IsEmpty())
@@ skipping 35 matching lines @@
             Profile::FromBrowserContext(host->GetBrowserContext()))) {
       host->Send(new ExtensionMsg_UpdatePermissions(params));
     }
   }
 
   // Trigger the onAdded and onRemoved events in the extension.
   DispatchEvent(extension->id(), event_name, changed);
 }
 
 }  // namespace extensions