detect preferences errors

chrome/renderer/extensions/extension_api_json_validity_unittest.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 "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 #include "chrome/common/json_value_serializer.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 74 matching lines @@
       .AppendASCII("api")
       .AppendASCII("extension_api.json");
   ASSERT_TRUE(file_util::PathExists(extension_api_json))
       << "Failed to find file 'extension_api.json' at the following path: "
       << extension_api_json.value();
 
   std::string error_message;
 
   // Check that extension_api.json can be parsed as JSON.
   JSONFileValueSerializer serializer(extension_api_json);
-  scoped_ptr<Value> root(serializer.Deserialize(&error_message));
+  scoped_ptr<Value> root(serializer.Deserialize(NULL, &error_message));
   ASSERT_TRUE(root.get()) << error_message;
   ASSERT_EQ(Value::TYPE_LIST, root->GetType());
   ListValue* root_list = static_cast<ListValue*>(root.get());
 
   // As a basic smoke test that the JSON we read is reasonable, find the
   // definition of the functions chrome.test.log() and
   // chrome.test.notifyPass().
   DictionaryValue* test_namespace_dict;
   ASSERT_TRUE(FindDictionaryWithProperyValue(
       root_list, "namespace", "test", &test_namespace_dict, &error_message))
@@ skipping 20 matching lines @@
       bindings_utils::GetStringResource<IDR_EXTENSION_API_JSON>();
 
   // Create a global variable holding the text of extension_api.json .
   SetGlobalStringVar("ext_api_json_text", ext_api_string);
 
   // Parse the text of extension_api.json .  If there is a parse error,
   // an exception will be printed that includes a line number.
   std::string test_js = "var extension_api = JSON.parse(ext_api_json_text);";
   ExecuteScriptInContext(test_js, "ParseExtensionApiJson");
 }