detect preferences errors

chrome/common/extensions/extension_file_util.cc

 // Copyright (c) 2009 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/common/extensions/extension_file_util.h"
 
 #include <map>
 #include <vector>
 
 #include "app/l10n_util.h"
@@ skipping 97 matching lines @@
                          bool require_key,
                          std::string* error) {
   FilePath manifest_path =
       extension_path.Append(Extension::kManifestFilename);
   if (!file_util::PathExists(manifest_path)) {
     *error = extension_manifest_errors::kManifestUnreadable;
     return NULL;
   }
 
   JSONFileValueSerializer serializer(manifest_path);
-  scoped_ptr<Value> root(serializer.Deserialize(error));
+  scoped_ptr<Value> root(serializer.Deserialize(NULL, error));
   if (!root.get()) {
     if (error->empty()) {
       // If |error| is empty, than the file could not be read.
       // It would be cleaner to have the JSON reader give a specific error
       // in this case, but other code tests for a file error with
       // error->empty().  For now, be consistent.
       *error = extension_manifest_errors::kManifestUnreadable;
     } else {
       *error = StringPrintf("%s  %s",
                             extension_manifest_errors::kManifestParseError,
@@ skipping 380 matching lines @@
       UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS);
 
 #if defined(OS_POSIX)
   return FilePath(file_path);
 #elif defined(OS_WIN)
   return FilePath(UTF8ToWide(file_path));
 #endif
 }
 
 }  // namespace extension_file_util