Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/extensions/webstore_inline_installer.cc

 // 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.
 
 #include "chrome/browser/extensions/webstore_inline_installer.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/string_util.h"
@@ skipping 83 matching lines @@
                           OnJSONParseSucceeded)
       IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Failed,
                           OnJSONParseFailed)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
     return handled;
   }
 
   void OnJSONParseSucceeded(const ListValue& wrapper) {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-    Value* value = NULL;
+    const Value* value = NULL;
     CHECK(wrapper.Get(0, &value));
     if (value->IsType(Value::TYPE_DICTIONARY)) {
       parsed_webstore_data_.reset(
-          static_cast<DictionaryValue*>(value)->DeepCopy());
+          static_cast<const DictionaryValue*>(value)->DeepCopy());
     } else {
       error_ = kInvalidWebstoreResponseError;
     }
 
     ReportResults();
   }
 
   virtual void OnJSONParseFailed(const std::string& error_message) {
     CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
     error_ = error_message;
@@ skipping 335 matching lines @@
     DLOG(WARNING) << "Could not parse " << verified_site_url <<
         " as URL pattern " << parse_result;
     return false;
   }
   verified_site_pattern.SetScheme("*");
 
   return verified_site_pattern.MatchesURL(requestor_url);
 }
 
 }  // namespace extensions