Added support for signed policy blobs on desktop.

chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.h

 // 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_POLICY_USER_CLOUD_POLICY_STORE_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_POLICY_USER_CLOUD_POLICY_STORE_CHROMEOS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 87 matching lines @@
                            const std::string& device_id);
 
   // Removes the passed-in legacy cache directory.
   static void RemoveLegacyCacheDir(const base::FilePath& dir);
 
   // Invokes |callback| after reloading |policy_key_|.
   void ReloadPolicyKey(const base::Closure& callback);
 
   // Reads the contents of |path| into |key|.
   static void LoadPolicyKey(const base::FilePath& path,
-                            std::vector<uint8>* key);
+                            std::string* key);
 
   // Callback for the key reloading.
-  void OnPolicyKeyReloaded(std::vector<uint8>* key,
+  void OnPolicyKeyReloaded(std::string* key,
                            const base::Closure& callback);
 
   // Invokes |callback| after creating |policy_key_|, if it hasn't been created
   // yet; otherwise invokes |callback| immediately.
   void EnsurePolicyKeyLoaded(const base::Closure& callback);
 
   // Callback for getting the sanitized username from |cryptohome_client_|.
   void OnGetSanitizedUsername(const base::Closure& callback,
                               chromeos::DBusMethodCallStatus call_status,
                               const std::string& sanitized_username);
 
   chromeos::CryptohomeClient* cryptohome_client_;
   chromeos::SessionManagerClient* session_manager_client_;
   const std::string username_;
   base::FilePath user_policy_key_dir_;
 
   base::WeakPtrFactory<UserCloudPolicyStoreChromeOS> weak_factory_;
 
   // TODO(mnissler): Remove all the legacy policy support members below after
   // the number of pre-M20 clients drops back to zero.
   base::FilePath legacy_cache_dir_;
   scoped_ptr<LegacyPolicyCacheLoader> legacy_loader_;
   bool legacy_caches_loaded_;
 
   bool policy_key_loaded_;
   base::FilePath policy_key_path_;
-  std::vector<uint8> policy_key_;
+  std::string policy_key_;
 
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyStoreChromeOS);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_USER_CLOUD_POLICY_STORE_CHROMEOS_H_