Move directory creation functions to base namespace.

chrome/browser/extensions/webstore_installer.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/webstore_installer.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 91 matching lines @@
 
 #if defined(OS_CHROMEOS)
   // Do not use drive for extension downloads.
   if (drive::util::IsUnderDriveMountPoint(directory))
     directory = DownloadPrefs::GetDefaultDownloadDirectory();
 #endif
 
   // Ensure the download directory exists. TODO(asargent) - make this use
   // common code from the downloads system.
   if (!base::DirectoryExists(directory)) {
-    if (!file_util::CreateDirectory(directory)) {
+    if (!base::CreateDirectory(directory)) {
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                               base::Bind(callback, base::FilePath()));
       return;
     }
   }
 
   // This is to help avoid a race condition between when we generate this
   // filename and when the download starts writing to it (think concurrently
   // running sharded browser tests installing the same test file, for
   // instance).
@@ skipping 532 matching lines @@
         1,
         kMaxSizeKb,
         kNumBuckets);
   }
   UMA_HISTOGRAM_BOOLEAN(
       "Extensions.WebstoreDownload.InterruptTotalSizeUnknown",
       total_bytes <= 0);
 }
 
 }  // namespace extensions