implement things needed to run net/disk_cache/backend_unittest

base/file_util_unittest.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 381 matching lines @@
 
   EXPECT_TRUE(file_util::Move(dir_name_from, dir_name_to));
 
   // Check everything has been moved.
   EXPECT_FALSE(file_util::PathExists(dir_name_from));
   EXPECT_FALSE(file_util::PathExists(file_name_from));
   EXPECT_TRUE(file_util::PathExists(dir_name_to));
   EXPECT_TRUE(file_util::PathExists(file_name_to));
 }
 
-// TODO(erikkay): implement
-#if defined(OS_WIN)
+#if !defined(OS_MACOSX)
 TEST_F(FileUtilTest, CopyDirectoryRecursively) {
   // Create a directory.
   std::wstring dir_name_from(test_dir_);
   file_util::AppendToPath(&dir_name_from, L"Copy_From_Subdir");
   file_util::CreateDirectory(dir_name_from.c_str());
   ASSERT_TRUE(file_util::PathExists(dir_name_from));
 
   // Create a file under the directory.
   std::wstring file_name_from(dir_name_from);
   file_util::AppendToPath(&file_name_from, L"Copy_Test_File.txt");
@@ skipping 275 matching lines @@
   EXPECT_EQ(file_contents, read_contents);
 
   DeleteFile(target_file.c_str());
   DeleteFile(link_file.c_str());
   CoUninitialize();
 }
 #endif
 
 TEST_F(FileUtilTest, CreateTemporaryFileNameTest) {
   std::wstring temp_file;
-  file_util::CreateTemporaryFileName(&temp_file);
+  ASSERT_TRUE(file_util::CreateTemporaryFileName(&temp_file));
   EXPECT_TRUE(file_util::PathExists(temp_file));
   EXPECT_TRUE(file_util::Delete(temp_file, false));
 }
 
 TEST_F(FileUtilTest, CreateNewTempDirectoryTest) {
   std::wstring temp_dir;
   file_util::CreateNewTempDirectory(std::wstring(), &temp_dir);
   EXPECT_TRUE(file_util::PathExists(temp_dir));
   EXPECT_TRUE(file_util::Delete(temp_dir, false));
 }
@@ skipping 202 matching lines @@
 
   // Make sure the destructor closes the find handle while in the middle of a
   // query to allow TearDown to delete the directory.
   file_util::FileEnumerator f6(test_dir_, true,
       file_util::FileEnumerator::FILES_AND_DIRECTORIES);
   EXPECT_FALSE(f6.Next().empty());  // Should have found something
                                     // (we don't care what).
 }
 
 }  // namespace