Added key-value storage for pending changes to OwnerSettingsServiceChromeOS.

components/ownership/owner_settings_service.h

 // Copyright 2014 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 COMPONENTS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_
 #define COMPONENTS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 29 matching lines @@
     // Called when signed policy was stored, or when an error happed during
     // policy storage..
     virtual void OnSignedPolicyStored(bool success) {}
 
     // Called when tentative changes were made to policy, but the policy still
     // not signed and stored.
     //
     // TODO (ygorshenin@, crbug.com/230018): get rid of the method
     // since it creates DeviceSettingsService's dependency on
     // OwnerSettingsService.
-    virtual void OnTentativeChangesInPolicy(
-        const enterprise_management::PolicyData& policy_data) {}
+    virtual void OnTentativeChangeInSettings(const std::string& setting,
+                                             const base::Value& value) {}
   };
 
   typedef base::Callback<void(
       scoped_ptr<enterprise_management::PolicyFetchResponse> policy_response)>
       AssembleAndSignPolicyAsyncCallback;
 
   typedef base::Callback<void(bool is_owner)> IsOwnerCallback;
 
   explicit OwnerSettingsService(
       const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util);
@@ skipping 70 matching lines @@
 
  private:
   base::WeakPtrFactory<OwnerSettingsService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OwnerSettingsService);
 };
 
 }  // namespace ownership
 
 #endif  // COMPONENTS_OWNERSHIP_OWNER_SETTINGS_SERVICE_H_