Set up the infrastructure for Extension event metrics.

extensions/browser/api/alarms/alarm_manager.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 "extensions/browser/api/alarms/alarm_manager.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 26 matching lines @@
 class DefaultAlarmDelegate : public AlarmManager::Delegate {
  public:
   explicit DefaultAlarmDelegate(content::BrowserContext* context)
       : browser_context_(context) {}
   ~DefaultAlarmDelegate() override {}
 
   void OnAlarm(const std::string& extension_id, const Alarm& alarm) override {
     scoped_ptr<base::ListValue> args(new base::ListValue());
     args->Append(alarm.js_alarm->ToValue().release());
     scoped_ptr<Event> event(
-        new Event(alarms::OnAlarm::kEventName, args.Pass()));
+        new Event(events::UNKNOWN, alarms::OnAlarm::kEventName, args.Pass()));
     EventRouter::Get(browser_context_)
         ->DispatchEventToExtension(extension_id, event.Pass());
   }
 
  private:
   content::BrowserContext* browser_context_;
 };
 
 // Creates a TimeDelta from a delay as specified in the API.
 base::TimeDelta TimeDeltaFromDelay(double delay_in_minutes) {
@@ skipping 400 matching lines @@
   if (create_info.period_in_minutes.get()) {
     js_alarm->period_in_minutes.reset(
         new double(*create_info.period_in_minutes));
   }
 }
 
 Alarm::~Alarm() {
 }
 
 }  // namespace extensions