Added support for multiple parameters to Extension API callbacks.

chrome/browser/extensions/api/downloads/downloads_api_unittest.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 <algorithm>
 
 #include "base/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop.h"
@@ skipping 478 matching lines @@
            extension_function_test_utils::NONE;
   }
 
   // extension_function_test_utils::RunFunction*() only uses browser for its
   // profile(), so pass it the on-record browser so that it always uses the
   // on-record profile to match real-life behavior.
 
   base::Value* RunFunctionAndReturnResult(UIThreadExtensionFunction* function,
                                           const std::string& args) {
     SetUpExtensionFunction(function);
-    return extension_function_test_utils::RunFunctionAndReturnResult(
+    return extension_function_test_utils::RunFunctionAndReturnSingleResult(
         function, args, browser(), GetFlags());
   }
 
   std::string RunFunctionAndReturnError(UIThreadExtensionFunction* function,
                                         const std::string& args) {
     SetUpExtensionFunction(function);
     return extension_function_test_utils::RunFunctionAndReturnError(
         function, args, browser(), GetFlags());
   }
 
@@ skipping 1641 matching lines @@
                           "  \"state\": {"
                           "    \"previous\": \"in_progress\","
                           "    \"current\": \"complete\"}}]",
                           result_id,
                           GetFilename("on_record.txt.crdownload").c_str(),
                           GetFilename("on_record.txt").c_str())));
   std::string disk_data;
   EXPECT_TRUE(file_util::ReadFileToString(item->GetFullPath(), &disk_data));
   EXPECT_STREQ(kPayloadData, disk_data.c_str());
 }