PART2: Make SignedSettings use proper Value types instead of string all around the place.

chrome/browser/chromeos/login/mock_signed_settings_helper.h

 // Copyright (c) 2011 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_LOGIN_MOCK_SIGNED_SETTINGS_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_SIGNED_SETTINGS_HELPER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/chromeos/login/signed_settings_helper.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace chromeos {
 
 class MockSignedSettingsHelper : public chromeos::SignedSettingsHelper {
  public:
   MockSignedSettingsHelper();
   virtual ~MockSignedSettingsHelper();
 
   MOCK_METHOD2(StartCheckWhitelistOp,
                void(const std::string& email, Callback*));
   MOCK_METHOD3(StartWhitelistOp,
                void(const std::string&, bool, Callback*));
   MOCK_METHOD3(StartStorePropertyOp,
-               void(const std::string&, const std::string&, Callback*));
+               void(const std::string&, const base::Value&, Callback*));
   MOCK_METHOD2(StartRetrieveProperty,
                void(const std::string&, Callback*));
   MOCK_METHOD2(StartStorePolicyOp,
                void(const em::PolicyFetchResponse&, Callback*));
   MOCK_METHOD1(StartRetrievePolicyOp, void(Callback* callback));
   MOCK_METHOD1(CancelCallback, void(Callback*));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockSignedSettingsHelper);
 };
 
 ACTION_P(MockSignedSettingsHelperStorePolicy, status_code) {
   arg1->OnStorePolicyCompleted(status_code);
 }
 
 ACTION_P2(MockSignedSettingsHelperRetrievePolicy, status_code, policy) {
   arg0->OnRetrievePolicyCompleted(status_code, policy);
 }
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_SIGNED_SETTINGS_HELPER_H_