Correct const accessors in base/values.(h|cc)

chrome/test/webdriver/webdriver_automation.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_TEST_WEBDRIVER_WEBDRIVER_AUTOMATION_H_
 #define CHROME_TEST_WEBDRIVER_WEBDRIVER_AUTOMATION_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 236 matching lines @@
   // Ownership of |value| is taken by this fucntion.
   void SetPreference(const std::string& pref,
                      base::Value* value,
                      Error** error);
 
   // Gets the current geolocation.
   void GetGeolocation(scoped_ptr<base::DictionaryValue>* geolocation,
                       Error** error);
 
   // Overrides the current geolocation.
-  void OverrideGeolocation(base::DictionaryValue* geolocation,
+  void OverrideGeolocation(const base::DictionaryValue* geolocation,
                            Error** error);
 
  private:
   AutomationProxy* automation() const;
   Error* ConvertViewIdToLocator(const WebViewId& view_id,
                                 WebViewLocator* view_locator);
   Error* DetermineBuildNumber();
   Error* CheckVersion(int min_required_build_no,
                       const std::string& error_msg);
   Error* CheckAlertsSupported();
   Error* CheckAdvancedInteractionsSupported();
   Error* CheckNewExtensionInterfaceSupported();
   Error* CheckGeolocationSupported();
   Error* CheckMaximizeSupported();
   Error* IsNewMouseApiSupported(bool* supports_new_api);
 
   const Logger& logger_;
   scoped_ptr<ProxyLauncher> launcher_;
   int build_no_;
   scoped_ptr<base::DictionaryValue> geolocation_;
 
   DISALLOW_COPY_AND_ASSIGN(Automation);
 };
 
 }  // namespace webdriver
 
 #endif  // CHROME_TEST_WEBDRIVER_WEBDRIVER_AUTOMATION_H_