Add error messages to JSONReader and friends. This required a bit of refactor...

chrome/test/ui/ui_test.cc

 // Copyright (c) 2006-2008 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 <set>
 #include <vector>
 
 #include "chrome/test/ui/ui_test.h"
 
 #include "base/base_switches.h"
@@ skipping 445 matching lines @@
   return base::GetProcessCount(chrome::kBrowserProcessExecutableName,
                                &filter);
 }
 
 static DictionaryValue* LoadDictionaryValueFromPath(const std::wstring& path) {
   if (path.empty())
     return NULL;
 
   JSONFileValueSerializer serializer(path);
   Value* root_value = NULL;
-  if (serializer.Deserialize(&root_value) &&
+  if (serializer.Deserialize(&root_value, NULL) &&
       root_value->GetType() != Value::TYPE_DICTIONARY) {
     delete root_value;
     return NULL;
   }
   return static_cast<DictionaryValue*>(root_value);
 }
 
 DictionaryValue* UITest::GetLocalState() {
   std::wstring local_state_path;
   PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
@@ skipping 197 matching lines @@
                               const std::wstring& units,
                               bool important) {
   // <*>RESULT <graph_name>: <trace_name>= <value> <units>
   // <*>RESULT <graph_name>: <trace_name>= {<mean>, <std deviation>} <units>
   // <*>RESULT <graph_name>: <trace_name>= [<value>,value,value,...,] <units>
   wprintf(L"%lsRESULT %ls%ls: %ls= %ls%ls%ls %ls\n",
           important ? L"*" : L"", measurement.c_str(), modifier.c_str(),
           trace.c_str(), prefix.c_str(), values.c_str(), suffix.c_str(),
           units.c_str());
 }