[chrome/browser/renderer_context_menu] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/renderer_context_menu/spellchecker_submenu_observer_mac.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/renderer_context_menu/spellchecker_submenu_observer.h"
 
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
@@ skipping 26 matching lines @@
     : proxy_(proxy),
       submenu_model_(delegate) {
   DCHECK(proxy_);
 }
 
 SpellCheckerSubMenuObserver::~SpellCheckerSubMenuObserver() {
 }
 
 void SpellCheckerSubMenuObserver::InitMenu(
     const content::ContextMenuParams& params) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   // Add an item that toggles the spelling panel.
   submenu_model_.AddCheckItem(
       IDC_SPELLPANEL_TOGGLE,
       l10n_util::GetStringUTF16(
           spellcheck_mac::SpellingPanelVisible() ?
               IDS_CONTENT_CONTEXT_HIDE_SPELLING_PANEL :
               IDS_CONTENT_CONTEXT_SHOW_SPELLING_PANEL));
   submenu_model_.AddSeparator(ui::NORMAL_SEPARATOR);
 
@@ skipping 65 matching lines @@
           prefs::kEnableContinuousSpellcheck,
           !GetPrefs(context)->GetBoolean(prefs::kEnableContinuousSpellcheck));
       break;
 
     case IDC_SPELLPANEL_TOGGLE:
       rvh->Send(new SpellCheckMsg_ToggleSpellPanel(
           rvh->GetRoutingID(), spellcheck_mac::SpellingPanelVisible()));
       break;
   }
 }