Set up the infrastructure for Extension event metrics.

chrome/browser/extensions/api/braille_display_private/braille_display_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/braille_display_private/braille_display_private_api.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/extensions/api/braille_display_private/braille_controller.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 44 matching lines @@
     LAZY_INSTANCE_INITIALIZER;
 
 // static
 BrowserContextKeyedAPIFactory<BrailleDisplayPrivateAPI>*
 BrailleDisplayPrivateAPI::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 void BrailleDisplayPrivateAPI::OnBrailleDisplayStateChanged(
     const DisplayState& display_state) {
-  scoped_ptr<Event> event(new Event(
-      OnDisplayStateChanged::kEventName,
-      OnDisplayStateChanged::Create(display_state)));
+  scoped_ptr<Event> event(
+      new Event(events::UNKNOWN, OnDisplayStateChanged::kEventName,
+                OnDisplayStateChanged::Create(display_state)));
   event_delegate_->BroadcastEvent(event.Pass());
 }
 
 void BrailleDisplayPrivateAPI::OnBrailleKeyEvent(const KeyEvent& key_event) {
   // Key events only go to extensions of the active profile.
   if (!IsProfileActive())
     return;
-  scoped_ptr<Event> event(new Event(
-      OnKeyEvent::kEventName, OnKeyEvent::Create(key_event)));
+  scoped_ptr<Event> event(new Event(events::UNKNOWN, OnKeyEvent::kEventName,
+                                    OnKeyEvent::Create(key_event)));
   event_delegate_->BroadcastEvent(event.Pass());
 }
 
 bool BrailleDisplayPrivateAPI::IsProfileActive() {
 #if defined(OS_CHROMEOS)
   Profile* active_profile;
   chromeos::ScreenLocker* screen_locker =
       chromeos::ScreenLocker::default_screen_locker();
   if (screen_locker && screen_locker->locked()) {
     active_profile = chromeos::ProfileHelper::GetSigninProfile();
@@ skipping 83 matching lines @@
 
 void BrailleDisplayPrivateWriteDotsFunction::Work() {
   BrailleController::GetInstance()->WriteDots(params_->cells);
 }
 
 bool BrailleDisplayPrivateWriteDotsFunction::Respond() {
   return true;
 }
 }  // namespace api
 }  // namespace extensions