Move PathExists to base namespace.

chrome/browser/download/chrome_download_manager_delegate.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/download/chrome_download_manager_delegate.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 352 matching lines @@
   drive::DownloadHandler* drive_download_handler =
       drive::DownloadHandler::GetForProfile(profile_);
   if (drive_download_handler &&
       drive_download_handler->IsDriveDownload(download)) {
     drive_download_handler->CheckForFileExistence(download, callback);
     return;
   }
 #endif
   BrowserThread::PostTaskAndReplyWithResult(
       BrowserThread::FILE, FROM_HERE,
-      base::Bind(&file_util::PathExists, download->GetTargetFilePath()),
+      base::Bind(&base::PathExists, download->GetTargetFilePath()),
       callback);
 }
 
 DownloadProtectionService*
     ChromeDownloadManagerDelegate::GetDownloadProtectionService() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 #if defined(FULL_SAFE_BROWSING)
   SafeBrowsingService* sb_service = g_browser_process->safe_browsing_service();
   if (sb_service && sb_service->download_protection_service() &&
       profile_->GetPrefs()->GetBoolean(prefs::kSafeBrowsingEnabled)) {
@@ skipping 144 matching lines @@
                     chrome::NOTIFICATION_CRX_INSTALLER_DONE,
                     source);
 
   scoped_refptr<extensions::CrxInstaller> installer =
       content::Source<extensions::CrxInstaller>(source).ptr();
   content::DownloadOpenDelayedCallback callback =
       crx_installers_[installer.get()];
   crx_installers_.erase(installer.get());
   callback.Run(installer->did_handle_successfully());
 }