[Extensions] Remove UIThreadExtensionFunction::DelegateForTests

extensions/browser/api/bluetooth/bluetooth_apitest.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 <string.h>
 
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
@@ skipping 179 matching lines @@
   SetUpMockAdapter();
 
   // Create a mock session to be returned as a result. Get a handle to it as
   // its ownership will be passed and |mock_session_| will be reset.
   mock_session_.reset(new testing::NiceMock<MockBluetoothDiscoverySession>());
   MockBluetoothDiscoverySession* session = mock_session_.get();
   EXPECT_CALL(*mock_adapter_, StartDiscoverySession(testing::_, testing::_))
       .WillOnce(
           testing::Invoke(this, &BluetoothApiTest::DiscoverySessionCallback));
   start_function = setupFunction(new api::BluetoothStartDiscoveryFunction);
-  (void)
-      utils::RunFunctionAndReturnError(start_function.get(), "[]", browser());
+  utils::RunFunction(start_function.get(), "[]", browser(), utils::NONE);
 
   // End the discovery session. The StopDiscovery function should succeed.
   testing::Mock::VerifyAndClearExpectations(mock_adapter_);
   EXPECT_CALL(*session, IsActive()).WillOnce(testing::Return(true));
   EXPECT_CALL(*session, Stop(testing::_, testing::_))
       .WillOnce(testing::Invoke(StopDiscoverySessionCallback));
 
   // StopDiscovery success will remove the session object, unreferencing the
   // adapter.
   scoped_refptr<api::BluetoothStopDiscoveryFunction> stop_function;
@@ skipping 236 matching lines @@
   // Load and wait for setup
   ExtensionTestMessageListener listener("ready", true);
   ASSERT_TRUE(
       LoadExtension(test_data_dir_.AppendASCII("bluetooth/device_info")));
   EXPECT_TRUE(listener.WaitUntilSatisfied());
 
   listener.Reply("go");
 
   EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
 }