Replace DCHECK(BrowserThread::CurrentlyOn) with DCHECK_CURRENTLY_ON in extensions.

chrome/browser/extensions/api/system_info/system_info_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/system_info/system_info_api.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
@@ skipping 96 matching lines @@
 
 SystemInfoEventRouter::~SystemInfoEventRouter() {
   if (has_storage_monitor_observer_) {
     StorageMonitor* storage_monitor = StorageMonitor::GetInstance();
     if (storage_monitor)
       storage_monitor->RemoveObserver(this);
   }
 }
 
 void SystemInfoEventRouter::AddEventListener(const std::string& event_name) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   watching_event_set_.insert(event_name);
   if (watching_event_set_.count(event_name) > 1)
     return;
 
   // For system.display event.
 #if defined(OS_CHROMEOS)
   if (IsDisplayChangedEvent(event_name))
     ash::Shell::GetScreen()->AddObserver(this);
 #endif
 
   if (IsSystemStorageEvent(event_name)) {
     if (!has_storage_monitor_observer_) {
       has_storage_monitor_observer_ = true;
       DCHECK(StorageMonitor::GetInstance()->IsInitialized());
       StorageMonitor::GetInstance()->AddObserver(this);
     }
   }
 }
 
 void SystemInfoEventRouter::RemoveEventListener(const std::string& event_name) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   std::multiset<std::string>::iterator it =
       watching_event_set_.find(event_name);
   if (it != watching_event_set_.end()) {
     watching_event_set_.erase(it);
     if (watching_event_set_.count(event_name) > 0)
       return;
   }
 
 #if defined(OS_CHROMEOS)
@@ skipping 104 matching lines @@
 void SystemInfoAPI::OnListenerRemoved(const EventListenerInfo& details) {
   if (IsSystemStorageEvent(details.event_name)) {
     StorageMonitor::GetInstance()->EnsureInitialized(
         base::Bind(&RemoveEventListener, details.event_name));
   } else {
     RemoveEventListener(details.event_name);
   }
 }
 
 }  // namespace extensions