detect preferences errors

chrome/browser/autocomplete/search_provider.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/autocomplete/search_provider.h"
 
 #include <algorithm>
 
 #include "app/l10n_util.h"
 #include "base/callback.h"
@@ skipping 165 matching lines @@
     }
   }
 
   bool is_keyword_results = (source == keyword_fetcher_.get());
   SuggestResults* suggest_results = is_keyword_results ?
       &keyword_suggest_results_ : &default_suggest_results_;
 
   if (status.is_success() && response_code == 200) {
     JSONStringValueSerializer deserializer(json_data);
     deserializer.set_allow_trailing_comma(true);
-    scoped_ptr<Value> root_val(deserializer.Deserialize(NULL));
+    scoped_ptr<Value> root_val(deserializer.Deserialize(NULL, NULL));
     const std::wstring& input_text =
         is_keyword_results ? keyword_input_text_ : input_.text();
     have_suggest_results_ =
         root_val.get() &&
         ParseSuggestResults(root_val.get(), is_keyword_results, input_text,
                             suggest_results);
   }
 
   ConvertResultsToAutocompleteMatches();
   listener_->OnProviderUpdate(!suggest_results->empty());
@@ skipping 557 matching lines @@
   // values preserve that property.  Otherwise, if the user starts editing a
   // suggestion, non-Search results will suddenly appear.
   if (input_.type() == AutocompleteInput::FORCED_QUERY)
     match.fill_into_edit.assign(L"?");
   match.fill_into_edit.append(match.contents);
   // TODO(pkasting): http://b/1112879 These should perhaps be
   // inline-autocompletable?
 
   return match;
 }