Use DCHECKs when observing only a single notification.

chrome/browser/jumplist_win.cc

 // Copyright 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/jumplist_win.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
@@ skipping 300 matching lines @@
 
 // static
 bool JumpList::Enabled() {
   return JumpListUpdater::IsEnabled();
 }
 
 void JumpList::Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) {
   DCHECK(CalledOnValidThread());
-  DCHECK_EQ(type, chrome::NOTIFICATION_PROFILE_DESTROYED);
+  DCHECK_EQ(chrome::NOTIFICATION_PROFILE_DESTROYED, type);
   // Profile was destroyed, do clean-up.
   Terminate();
 }
 
 void JumpList::CancelPendingUpdate() {
   DCHECK(CalledOnValidThread());
   if (task_id_ != base::CancelableTaskTracker::kBadTaskId) {
     cancelable_task_tracker_.TryCancel(task_id_);
     task_id_ = base::CancelableTaskTracker::kBadTaskId;
   }
@@ skipping 249 matching lines @@
 void JumpList::TopSitesLoaded(history::TopSites* top_sites) {
 }
 
 void JumpList::TopSitesChanged(history::TopSites* top_sites,
                                ChangeReason change_reason) {
   top_sites->GetMostVisitedURLs(
       base::Bind(&JumpList::OnMostVisitedURLsAvailable,
                  weak_ptr_factory_.GetWeakPtr()),
       false);
 }