Move scoped_temp_dir and scoped_native_library back from base/memory to base.

base/memory/scoped_temp_dir.h

-// 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.
-
-#ifndef BASE_MEMORY_SCOPED_TEMP_DIR_H_
-#define BASE_MEMORY_SCOPED_TEMP_DIR_H_
-#pragma once
-
-// An object representing a temporary / scratch directory that should be cleaned
-// up (recursively) when this object goes out of scope.  Note that since
-// deletion occurs during the destructor, no further error handling is possible
-// if the directory fails to be deleted.  As a result, deletion is not
-// guaranteed by this class.
-//
-// Multiple calls to the methods which establish a temporary directory
-// (CreateUniqueTempDir, CreateUniqueTempDirUnderPath, and Set) must have
-// intervening calls to Delete or Take, or the calls will fail.
-
-#include "base/base_api.h"
-#include "base/file_path.h"
-
-class BASE_API ScopedTempDir {
- public:
-  // No directory is owned/created initially.
-  ScopedTempDir();
-
-  // Recursively delete path.
-  ~ScopedTempDir();
-
-  // Creates a unique directory in TempPath, and takes ownership of it.
-  // See file_util::CreateNewTemporaryDirectory.
-  bool CreateUniqueTempDir() WARN_UNUSED_RESULT;
-
-  // Creates a unique directory under a given path, and takes ownership of it.
-  bool CreateUniqueTempDirUnderPath(const FilePath& path) WARN_UNUSED_RESULT;
-
-  // Takes ownership of directory at |path|, creating it if necessary.
-  // Don't call multiple times unless Take() has been called first.
-  bool Set(const FilePath& path) WARN_UNUSED_RESULT;
-
-  // Deletes the temporary directory wrapped by this object.
-  bool Delete() WARN_UNUSED_RESULT;
-
-  // Caller takes ownership of the temporary directory so it won't be destroyed
-  // when this object goes out of scope.
-  FilePath Take();
-
-  const FilePath& path() const { return path_; }
-
-  // Returns true if path_ is non-empty and exists.
-  bool IsValid() const;
-
- private:
-  FilePath path_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedTempDir);
-};
-
-#endif  // BASE_MEMORY_SCOPED_TEMP_DIR_H_