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

chrome/browser/download/download_crx_util.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.
 //
 // Download code which handles CRX files (extensions, themes, apps, ...).
 
 #include "chrome/browser/download/download_crx_util.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/crx_installer.h"
@@ skipping 76 matching lines @@
   installer->set_install_cause(extension_misc::INSTALL_CAUSE_USER_DOWNLOAD);
   installer->set_original_mime_type(download_item.GetOriginalMimeType());
   installer->set_apps_require_extension_mime_type(true);
 
   return installer;
 }
 
 scoped_refptr<extensions::CrxInstaller> OpenChromeExtension(
     Profile* profile,
     const DownloadItem& download_item) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   scoped_refptr<extensions::CrxInstaller> installer(
       CreateCrxInstaller(profile, download_item));
 
   if (OffStoreInstallAllowedByPrefs(profile, download_item)) {
     installer->set_off_store_install_allow_reason(
         extensions::CrxInstaller::OffStoreInstallAllowedBecausePref);
   }
 
   if (extensions::UserScript::IsURLUserScript(download_item.GetURL(),
@@ skipping 24 matching lines @@
 
 bool OffStoreInstallAllowedByPrefs(Profile* profile, const DownloadItem& item) {
   // TODO(aa): RefererURL is cleared in some cases, for example when going
   // between secure and non-secure URLs. It would be better if DownloadItem
   // tracked the initiating page explicitly.
   return extensions::ExtensionManagementFactory::GetForBrowserContext(profile)
       ->IsOffstoreInstallAllowed(item.GetURL(), item.GetReferrerUrl());
 }
 
 }  // namespace download_crx_util