Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/sync_file_system/local/syncable_file_operation_runner_unittest.cc

 // Copyright 2013 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 <string>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/files/file.h"
 #include "base/location.h"
@@ skipping 337 matching lines @@
   EXPECT_EQ(2, callback_count_);
 }
 
 // Test if CopyInForeignFile runs cooperatively with other Sync operations.
 TEST_F(SyncableFileOperationRunnerTest, CopyInForeignFile) {
   const std::string kTestData("test data");
 
   base::FilePath temp_path;
   ASSERT_TRUE(CreateTempFile(&temp_path));
   ASSERT_EQ(static_cast<int>(kTestData.size()),
-            file_util::WriteFile(
+            base::WriteFile(
                 temp_path, kTestData.data(), kTestData.size()));
 
   sync_status()->StartSyncing(URL(kFile));
   ASSERT_FALSE(sync_status()->IsWritable(URL(kFile)));
 
   // The URL is in syncing so CopyIn (which is a write operation) won't run.
   ResetCallbackStatus();
   file_system_.operation_runner()->CopyInForeignFile(
       temp_path, URL(kFile),
       ExpectStatus(FROM_HERE, File::FILE_OK));
@@ skipping 31 matching lines @@
       file_system_.operation_runner()->Truncate(
           URL(kFile), 10,
           ExpectStatus(FROM_HERE, File::FILE_OK));
   file_system_.operation_runner()->Cancel(
       id, ExpectStatus(FROM_HERE, File::FILE_ERROR_INVALID_OPERATION));
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(2, callback_count_);
 }
 
 }  // namespace sync_file_system