Remove legacy policy cache support on chromeos

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 <memory>
 #include <string>
 #include <vector>
@@ skipping 12 matching lines @@
 class SequencedTaskRunner;
 }
 
 namespace chromeos {
 class CryptohomeClient;
 class SessionManagerClient;
 }
 
 namespace policy {
 
-class LegacyPolicyCacheLoader;
-
 // Implements a cloud policy store backed by the Chrome OS' session_manager,
 // which takes care of persisting policy to disk and is accessed via DBus calls
 // through SessionManagerClient.
-//
-// Additionally, this class drives legacy UserPolicyTokenCache and
-// UserPolicyDiskCache instances, migrating policy from these to session_manager
-// storage on the fly.
 class UserCloudPolicyStoreChromeOS : public UserCloudPolicyStoreBase {
  public:
   UserCloudPolicyStoreChromeOS(
       chromeos::CryptohomeClient* cryptohome_client,
       chromeos::SessionManagerClient* session_manager_client,
       scoped_refptr<base::SequencedTaskRunner> background_task_runner,
       const AccountId& account_id,
-      const base::FilePath& user_policy_key_dir,
-      const base::FilePath& legacy_token_cache_file,
-      const base::FilePath& legacy_policy_cache_file);
+      const base::FilePath& user_policy_key_dir);
   ~UserCloudPolicyStoreChromeOS() override;
 
   // CloudPolicyStore:
   void Store(const enterprise_management::PolicyFetchResponse& policy) override;
   void Load() override;
 
   // Loads the policy synchronously on the current thread.
   void LoadImmediately();
 
  private:
@@ skipping 12 matching lines @@
   void OnPolicyRetrieved(const std::string& policy_blob);
 
   // Starts validation of the loaded |policy| before installing it.
   void ValidateRetrievedPolicy(
       std::unique_ptr<enterprise_management::PolicyFetchResponse> policy);
 
   // Completion handler for policy validation on the Load() path. Installs the
   // policy and publishes it if validation succeeded.
   void OnRetrievedPolicyValidated(UserCloudPolicyValidator* validator);
 
-  // Callback for loading legacy caches.
-  void OnLegacyLoadFinished(
-      const std::string& dm_token,
-      const std::string& device_id,
-      Status status,
-      std::unique_ptr<enterprise_management::PolicyFetchResponse>);
-
-  // Completion callback for legacy policy validation.
-  void OnLegacyPolicyValidated(const std::string& dm_token,
-                               const std::string& device_id,
-                               UserCloudPolicyValidator* validator);
-
-  // Installs legacy tokens.
-  void InstallLegacyTokens(const std::string& dm_token,
-                           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::string* key);
 
   // Callback for the key reloading.
   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);
 
   std::unique_ptr<UserCloudPolicyValidator> CreateValidatorForLoad(
       std::unique_ptr<enterprise_management::PolicyFetchResponse> policy);
 
   chromeos::CryptohomeClient* cryptohome_client_;
   chromeos::SessionManagerClient* session_manager_client_;
   const AccountId account_id_;
   base::FilePath user_policy_key_dir_;
 
-  // 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_;
-  std::unique_ptr<LegacyPolicyCacheLoader> legacy_loader_;
-  bool legacy_caches_loaded_;
-
   bool policy_key_loaded_;
   base::FilePath policy_key_path_;
   std::string policy_key_;
 
   base::WeakPtrFactory<UserCloudPolicyStoreChromeOS> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyStoreChromeOS);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_USER_CLOUD_POLICY_STORE_CHROMEOS_H_