Set up the infrastructure for Extension event metrics.

chrome/browser/apps/ephemeral_app_browsertest.cc

 // Copyright 2014 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/apps/ephemeral_app_browsertest.h"
 
 #include <vector>
 
 #include "apps/app_restore_service.h"
 #include "apps/saved_files_service.h"
@@ skipping 408 matching lines @@
   }
 
   // Dispatch a fake alarm event to the app.
   void DispatchAlarmEvent(EventRouter* event_router,
                           const std::string& app_id) {
     alarms::Alarm dummy_alarm;
     dummy_alarm.name = "test_alarm";
 
     scoped_ptr<base::ListValue> args(new base::ListValue());
     args->Append(dummy_alarm.ToValue().release());
-    scoped_ptr<Event> event(new Event(alarms::OnAlarm::kEventName,
-                                      args.Pass()));
+    scoped_ptr<Event> event(new Event(
+        extensions::events::UNKNOWN, alarms::OnAlarm::kEventName, args.Pass()));
 
     event_router->DispatchEventToExtension(app_id, event.Pass());
   }
 
   // Simulates the scenario where an app is installed, via the normal
   // installation route, on top of an ephemeral app. This can occur due to race
   // conditions.
   const Extension* ReplaceEphemeralApp(const std::string& app_id,
                                        const char* test_path,
                                        int expected_enabled_change) {
@@ skipping 583 matching lines @@
       base::Bind(&PowerSaveBlockerStub::Create, &power_settings));
 
   const Extension* app = InstallAndLaunchEphemeralApp(kPowerTestApp);
   ASSERT_TRUE(app);
   EXPECT_EQ(1, power_settings.keep_awake_count());
 
   CloseAppWaitForUnload(app->id());
 
   EXPECT_EQ(0, power_settings.keep_awake_count());
 }