Added code to persist downloaded cloud policy to disk.

chrome/browser/policy/user_cloud_policy_store.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_POLICY_USER_CLOUD_POLICY_STORE_H_
 #define CHROME_BROWSER_POLICY_USER_CLOUD_POLICY_STORE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/policy/user_cloud_policy_store_base.h"
 
 namespace policy {
 
 // Implements a cloud policy store that is stored in a simple file in the user's
 // profile directory. This is used on (non-chromeos) platforms that do not have
 // a secure storage implementation.
 class UserCloudPolicyStore : public UserCloudPolicyStoreBase {
  public:
   // Creates a policy store associated with the user signed in to this
   // |profile|.
-  explicit UserCloudPolicyStore(Profile* profile);
+  UserCloudPolicyStore(Profile* profile, const FilePath& policy_file);
   virtual ~UserCloudPolicyStore();
 
   // CloudPolicyStore implementation.
   virtual void Load() OVERRIDE;
   virtual void Store(
       const enterprise_management::PolicyFetchResponse& policy) OVERRIDE;
 
  protected:
   virtual void RemoveStoredPolicy() OVERRIDE;
 
  private:
+
+  // Callback invoked when a new policy has been loaded from disk.
+  void PolicyLoaded(struct PolicyLoadResult policy_load_result);
+
   // Starts policy blob validation. |callback| is invoked once validation is
   // complete.
   void Validate(
       scoped_ptr<enterprise_management::PolicyFetchResponse> policy,
       const UserCloudPolicyValidator::CompletionCallback& callback);
 
+  // Callback invoked to install a just-loaded policy after validation has
+  // finished.
+  void InstallLoadedPolicyAfterValidation(UserCloudPolicyValidator* validator);
+
   // Callback invoked to store the policy after validation has finished.
   void StorePolicyAfterValidation(UserCloudPolicyValidator* validator);
 
+  // WeakPtrFactory used to create callbacks for validating and storing policy.
   base::WeakPtrFactory<UserCloudPolicyStore> weak_factory_;
 
   // Weak pointer to the profile associated with this store.
   Profile* profile_;
 
+  // Path to file where we store persisted policy.
+  FilePath backing_file_path_;
+
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyStore);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_USER_CLOUD_POLICY_STORE_H_