detect preferences errors

chrome/browser/geolocation/network_location_request.cc

 // Copyright (c) 2010 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/geolocation/network_location_request.h"
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/string_util.h"
 #include "base/values.h"
@@ skipping 274 matching lines @@
   if (response_body.empty()) {
     LOG(WARNING) << "ParseServerResponse() : Response was empty.\n";
     return false;
   }
   DLOG(INFO) << "ParseServerResponse() : Parsing response "
              << response_body << ".\n";
 
   // Parse the response, ignoring comments.
   std::string error_msg;
   scoped_ptr<Value> response_value(base::JSONReader::ReadAndReturnError(
-      response_body, false, &error_msg));
+      response_body, false, NULL, &error_msg));
   if (response_value == NULL) {
     LOG(WARNING) << "ParseServerResponse() : JSONReader failed : "
                  << error_msg << ".\n";
     return false;
   }
 
   if (!response_value->IsType(Value::TYPE_DICTIONARY)) {
     LOG(INFO) << "ParseServerResponse() : Unexpected resopnse type "
               << response_value->GetType() <<  ".\n";
     return false;
@@ skipping 103 matching lines @@
     AddInteger(L"signal_strength", iter->radio_signal_strength, wifi_tower);
     AddInteger(L"age", age_milliseconds, wifi_tower);
     AddInteger(L"channel", iter->channel, wifi_tower);
     AddInteger(L"signal_to_noise", iter->signal_to_noise, wifi_tower);
     AddString(L"ssid", iter->ssid, wifi_tower);
     wifi_towers->Append(wifi_tower);
   }
   body_object->Set(L"wifi_towers", wifi_towers);
 }
 }  // namespace