Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/api/screenlock_private/screenlock_private_api.cc

 // Copyright 2013 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/api/screenlock_private/screenlock_private_api.h"
 
 #include "base/lazy_instance.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
@@ skipping 116 matching lines @@
     const std::string& user_id) {
 }
 
 void ScreenlockPrivateEventRouter::DispatchEvent(
     const std::string& event_name,
     base::Value* arg) {
   scoped_ptr<base::ListValue> args(new base::ListValue());
   if (arg)
     args->Append(arg);
   scoped_ptr<extensions::Event> event(new extensions::Event(
-      event_name, args.Pass()));
+      extensions::events::UNKNOWN, event_name, args.Pass()));
   extensions::EventRouter::Get(browser_context_)->BroadcastEvent(event.Pass());
 }
 
 static base::LazyInstance<extensions::BrowserContextKeyedAPIFactory<
     ScreenlockPrivateEventRouter> > g_factory = LAZY_INSTANCE_INITIALIZER;
 
 // static
 extensions::BrowserContextKeyedAPIFactory<ScreenlockPrivateEventRouter>*
 ScreenlockPrivateEventRouter::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 void ScreenlockPrivateEventRouter::Shutdown() {
   GetScreenlockBridgeInstance()->RemoveObserver(this);
 }
 
 bool ScreenlockPrivateEventRouter::OnAuthAttempted(
     proximity_auth::ScreenlockBridge::LockHandler::AuthType auth_type,
     const std::string& value) {
   extensions::EventRouter* router =
       extensions::EventRouter::Get(browser_context_);
   if (!router->HasEventListener(screenlock::OnAuthAttempted::kEventName))
     return false;
 
   scoped_ptr<base::ListValue> args(new base::ListValue());
   args->AppendString(screenlock::ToString(FromLockHandlerAuthType(auth_type)));
   args->AppendString(value);
 
   scoped_ptr<extensions::Event> event(new extensions::Event(
-      screenlock::OnAuthAttempted::kEventName, args.Pass()));
+      extensions::events::UNKNOWN, screenlock::OnAuthAttempted::kEventName,
+      args.Pass()));
   router->BroadcastEvent(event.Pass());
   return true;
 }
 
 }  // namespace extensions