Add DeviceSettingsService.

chrome/browser/chromeos/settings/owner_key_util.h

Index: chrome/browser/chromeos/settings/owner_key_util.h
diff --git a/chrome/browser/chromeos/settings/owner_key_util.h b/chrome/browser/chromeos/settings/owner_key_util.h
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+++ b/chrome/browser/chromeos/settings/owner_key_util.h
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+// Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_SETTINGS_OWNER_KEY_UTIL_H_
+#define CHROME_BROWSER_CHROMEOS_SETTINGS_OWNER_KEY_UTIL_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/file_path.h"
+#include "base/gtest_prod_util.h"
+#include "base/memory/ref_counted.h"
+
+class FilePath;
+
+namespace crypto {
+class RSAPrivateKey;
+}
+
+namespace chromeos {
+
+class OwnerKeyUtilTest;
+
+class OwnerKeyUtil : public base::RefCounted<OwnerKeyUtil> {
+ public:
+  // Creates an OwnerKeyUtil instance.
+  static OwnerKeyUtil* Create();
+
+  // Attempts to read the public key from the file system.
+  // Upon success, returns true and populates |output|.  False on failure.
+  virtual bool ImportPublicKey(std::vector<uint8>* output) = 0;
+
+  // Looks for the private key associated with |key| in the default slot,
+  // and returns it if it can be found.  Returns NULL otherwise.
+  // Caller takes ownership.
+  virtual crypto::RSAPrivateKey* FindPrivateKey(
+      const std::vector<uint8>& key) = 0;
+
+  // Checks whether the public key is present in the file system.
+  virtual bool IsPublicKeyPresent() = 0;
+
+ protected:
+  OwnerKeyUtil();
+  virtual ~OwnerKeyUtil();
+
+ private:
+  friend class base::RefCounted<OwnerKeyUtil>;
+
+  FRIEND_TEST_ALL_PREFIXES(OwnerKeyUtilTest, ExportImportPublicKey);
+};
+
+// Implementation of OwnerKeyUtil that is used in production code.
+class OwnerKeyUtilImpl : public OwnerKeyUtil {
+ public:
+  // The file outside the owner's encrypted home directory where her
+  // key will live.
+  static const char kOwnerKeyFile[];
+
+  explicit OwnerKeyUtilImpl(const FilePath& public_key_file);
+
+  // OwnerKeyUtil:
+  virtual bool ImportPublicKey(std::vector<uint8>* output) OVERRIDE;
+  virtual crypto::RSAPrivateKey* FindPrivateKey(
+      const std::vector<uint8>& key) OVERRIDE;
+  virtual bool IsPublicKeyPresent() OVERRIDE;
+
+ protected:
+  virtual ~OwnerKeyUtilImpl();
+
+ private:
+  // The file that holds the public key.
+  FilePath key_file_;
+
+  DISALLOW_COPY_AND_ASSIGN(OwnerKeyUtilImpl);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_SETTINGS_OWNER_KEY_UTIL_H_