Remove TODO as code is working as is.

chrome/browser/chromeos/login/screen_locker.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/chromeos/login/screen_locker.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 54 matching lines @@
                    content::NotificationService::AllSources());
   }
 
   // NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE {
     switch (type) {
       case chrome::NOTIFICATION_LOGIN_USER_CHANGED: {
         // Register Screen Lock only after a user has logged in.
-        // TODO(flackr): Observe PowerManagerClient on desktop build.
-        // crbug.com/119798
         chromeos::PowerManagerClient* power_manager =
             chromeos::DBusThreadManager::Get()->GetPowerManagerClient();
         if (!power_manager->HasObserver(this))
           power_manager->AddObserver(this);
         break;
       }
 
       case chrome::NOTIFICATION_SESSION_STARTED: {
         session_started_ = true;
         break;
@@ skipping 367 matching lines @@
   bool state = true;
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_SCREEN_LOCK_STATE_CHANGED,
       content::Source<ScreenLocker>(this),
       content::Details<bool>(&state));
   DBusThreadManager::Get()->GetPowerManagerClient()->
       NotifyScreenLockCompleted();
 }
 
 }  // namespace chromeos