Clean up unused param in RegistryOverrideManager

chrome/installer/setup/setup_util_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 "chrome/installer/setup/setup_util_unittest.h"
 
 #include <windows.h>
 
 #include <string>
 
@@ skipping 390 matching lines @@
   base::FilePath patch_source(installer::FindArchiveToPatch(
       *original_state_, *installer_state_));
   EXPECT_EQ(base::FilePath::StringType(), patch_source.value());
 }
 
 namespace {
 
 class MigrateMultiToSingleTest : public testing::Test {
  protected:
   virtual void SetUp() OVERRIDE {
-    registry_override_manager_.OverrideRegistry(kRootKey,
-                                                L"MigrateMultiToSingleTest");
+    registry_override_manager_.OverrideRegistry(kRootKey);
   }
 
   static const bool kSystemLevel = false;
   static const HKEY kRootKey;
   static const wchar_t kVersionString[];
   static const wchar_t kMultiChannel[];
   registry_util::RegistryOverrideManager registry_override_manager_;
 };
 
 const bool MigrateMultiToSingleTest::kSystemLevel;
@@ skipping 64 matching lines @@
 }
 
 TEST(SetupUtilTest, ContainsUnsupportedSwitch) {
   EXPECT_FALSE(installer::ContainsUnsupportedSwitch(
       CommandLine::FromString(L"foo.exe")));
   EXPECT_FALSE(installer::ContainsUnsupportedSwitch(
       CommandLine::FromString(L"foo.exe --multi-install --chrome")));
   EXPECT_TRUE(installer::ContainsUnsupportedSwitch(
       CommandLine::FromString(L"foo.exe --chrome-frame")));
 }