Added support for multiple parameters to Extension API callbacks.

chrome/browser/extensions/settings/settings_api.cc

 // Copyright (c) 2012 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/extensions/settings/settings_api.h"
 
 #include "base/bind.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extensions_quota_service.h"
@@ skipping 60 matching lines @@
       base::Bind(&SettingsFunction::SendResponse, this, success));
 }
 
 bool SettingsFunction::UseReadResult(ValueStore::ReadResult result) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   if (result->HasError()) {
     error_ = result->error();
     return false;
   }
 
-  result_ = result->settings().Pass();
+  SetResult(result->settings().release());
   return true;
 }
 
 bool SettingsFunction::UseWriteResult(ValueStore::WriteResult result) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   if (result->HasError()) {
     error_ = result->error();
     return false;
   }
 
@@ skipping 124 matching lines @@
       AddAllStringValues(*static_cast<ListValue*>(input), &as_string_list);
       bytes_in_use = storage->GetBytesInUse(as_string_list);
       break;
     }
 
     default:
       error_ = kUnsupportedArgumentType;
       return false;
   }
 
-  result_.reset(Value::CreateIntegerValue(bytes_in_use));
+  SetResult(Value::CreateIntegerValue(bytes_in_use));
   return true;
 }
 
 bool SetSettingsFunction::RunWithStorage(ValueStore* storage) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   DictionaryValue* input = NULL;
   EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &input));
   return UseWriteResult(storage->Set(ValueStore::DEFAULTS, *input));
 }
 
@@ skipping 35 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   return UseWriteResult(storage->Clear());
 }
 
 void ClearSettingsFunction::GetQuotaLimitHeuristics(
     QuotaLimitHeuristics* heuristics) const {
   GetModificationQuotaLimitHeuristics(heuristics);
 }
 
 }  // namespace extensions