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

chrome/test/webdriver/commands/url_command.cc

 // 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.
 
 #include "chrome/test/webdriver/commands/url_command.h"
 
 #include <string>
 
 #include "chrome/test/webdriver/commands/response.h"
 #include "chrome/test/webdriver/webdriver_error.h"
 #include "chrome/test/webdriver/webdriver_session.h"
 
 namespace webdriver {
 
 URLCommand::URLCommand(const std::vector<std::string>& path_segments,
-                       const DictionaryValue* const parameters)
+                       DictionaryValue* const parameters)
     : WebDriverCommand(path_segments, parameters) {}
 
 URLCommand::~URLCommand() {}
 
 bool URLCommand::DoesGet() {
   return true;
 }
 
 bool URLCommand::DoesPost() {
   return true;
@@ skipping 19 matching lines @@
 
   Error* error = session_->NavigateToURL(url);
   if (error) {
     response->SetError(error);
     return;
   }
 }
 
 
 }  // namespace webdriver