Move file_util::Delete to the base namespace

chrome/browser/chromeos/drive/file_cache_unittest.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/chromeos/drive/file_cache.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 920 matching lines @@
   const base::FilePath file_directory =
       temp_dir_.path().Append(util::kCacheFileDirectory);
   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
       file_directory.AppendASCII("id_foo.md5foo"), "foo"));
   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
       file_directory.AppendASCII("id_bar.local"), "bar"));
 
   // Remove the existing DB.
   const base::FilePath metadata_directory =
       temp_dir_.path().Append(util::kMetadataDirectory);
-  ASSERT_TRUE(file_util::Delete(metadata_directory, true /* recursive */));
+  ASSERT_TRUE(base::Delete(metadata_directory, true /* recursive */));
 
   // Put an empty file with the same name as old DB.
   // This file cannot be opened by ImportOldDB() and will be dismissed.
   ASSERT_TRUE(file_util::CreateDirectory(metadata_directory));
   ASSERT_TRUE(google_apis::test_util::WriteStringToFile(
       metadata_directory.Append(FileCache::kOldCacheMetadataDBName), ""));
 
   // Create a new cache and initialize it.
   metadata_storage_.reset(new ResourceMetadataStorage(
       metadata_directory, base::MessageLoopProxy::current()));
@@ skipping 89 matching lines @@
   // Data is imported correctly.
   FileCacheEntry entry;
   EXPECT_TRUE(cache_->GetCacheEntry(key1, std::string(), &entry));
   EXPECT_EQ(md5_1, entry.md5());
   EXPECT_TRUE(cache_->GetCacheEntry(key2, std::string(), &entry));
   EXPECT_EQ(md5_2, entry.md5());
 }
 
 }  // namespace internal
 }  // namespace drive