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

chrome/browser/extensions/api/file_handlers/app_file_handler_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.
 
 #include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h"
 
 #include "base/file_util.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 157 matching lines @@
 #endif
   content::BrowserThread::PostTask(
       content::BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&WritableFileChecker::CheckLocalWritableFiles, this));
 }
 
 WritableFileChecker::~WritableFileChecker() {}
 
 void WritableFileChecker::TaskDone() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   if (--outstanding_tasks_ == 0) {
     if (error_path_.empty())
       on_success_.Run();
     else
       on_failure_.Run(error_path_);
   }
 }
 
 // Reports an error in completing a work item. This may be called more than
 // once, but only the last message will be retained.
 void WritableFileChecker::Error(const base::FilePath& error_path) {
   DCHECK(!error_path.empty());
   error_path_ = error_path;
   TaskDone();
 }
 
 void WritableFileChecker::CheckLocalWritableFiles() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
   std::string error;
   for (std::vector<base::FilePath>::const_iterator it = paths_.begin();
        it != paths_.end();
        ++it) {
     if (!DoCheckWritableFile(*it, is_directory_)) {
       content::BrowserThread::PostTask(
           content::BrowserThread::UI,
           FROM_HERE,
           base::Bind(&WritableFileChecker::Error, this, *it));
       return;
@@ skipping 195 matching lines @@
     *error = kInvalidParameters;
     return false;
   }
 
   return true;
 }
 
 }  // namespace app_file_handler_util
 
 }  // namespace extensions