Move scoped_temp_dir from base to base/files

base/files/scoped_temp_dir_unittest.cc

 // Copyright (c) 2011 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/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/platform_file.h"
-#include "base/scoped_temp_dir.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace base {
+
 TEST(ScopedTempDir, FullPath) {
   FilePath test_path;
   file_util::CreateNewTempDirectory(FILE_PATH_LITERAL("scoped_temp_dir"),
                                     &test_path);
 
   // Against an existing dir, it should get destroyed when leaving scope.
   EXPECT_TRUE(file_util::DirectoryExists(test_path));
   {
     ScopedTempDir dir;
     EXPECT_TRUE(dir.Set(test_path));
@@ skipping 82 matching lines @@
                                                      NULL, &error_code);
   EXPECT_NE(base::kInvalidPlatformFileValue, file);
   EXPECT_EQ(base::PLATFORM_FILE_OK, error_code);
   EXPECT_FALSE(dir.Delete());  // We should not be able to delete.
   EXPECT_FALSE(dir.path().empty());  // We should still have a valid path.
   EXPECT_TRUE(base::ClosePlatformFile(file));
   // Now, we should be able to delete.
   EXPECT_TRUE(dir.Delete());
 }
 #endif  // defined(OS_WIN)
+
+}  // namespace base