Move GetFileSize, NormalizeFilePath to base namespace

chrome/browser/chromeos/drive/file_system/truncate_operation_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 "chrome/browser/chromeos/drive/file_system/truncate_operation.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/task_runner_util.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
@@ skipping 42 matching lines @@
       FROM_HERE,
       base::Bind(&internal::FileCache::GetFile,
                  base::Unretained(cache()),
                  GetLocalId(file_in_root), &local_path),
       google_apis::test_util::CreateCopyResultCallback(&error));
   test_util::RunBlockingPoolTask();
   ASSERT_EQ(FILE_ERROR_OK, error);
 
   // The local file should be truncated.
   int64 local_file_size = 0;
-  file_util::GetFileSize(local_path, &local_file_size);
+  base::GetFileSize(local_path, &local_file_size);
   EXPECT_EQ(1, local_file_size);
 }
 
 TEST_F(TruncateOperationTest, NegativeSize) {
   base::FilePath file_in_root(FILE_PATH_LITERAL("drive/root/File 1.txt"));
   ResourceEntry src_entry;
   ASSERT_EQ(FILE_ERROR_OK, GetLocalResourceEntry(file_in_root, &src_entry));
   const int64 file_size = src_entry.file_info().size();
 
   // Make sure the file has at least 2 bytes.
@@ skipping 51 matching lines @@
   std::string content;
   ASSERT_TRUE(base::ReadFileToString(local_path, &content));
 
   EXPECT_EQ(file_size + 10, static_cast<int64>(content.size()));
   // All trailing 10 bytes should be '\0'.
   EXPECT_EQ(std::string(10, '\0'), content.substr(file_size));
 }
 
 }  // namespace file_system
 }  // namespace drive