Clean up unused param in RegistryOverrideManager

chrome/browser/media_galleries/media_galleries_test_util.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/media_galleries/media_galleries_test_util.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 180 matching lines @@
   // Picasa are installed.
   app_data_override_.reset(new base::ScopedPathOverride(
       base::DIR_APP_DATA, GetFakeAppDataPath()));
 #endif  // OS_WIN || OS_MACOSX
 
 #if defined(OS_WIN)
   // Picasa on Windows is by default in the DIR_LOCAL_APP_DATA directory.
   local_app_data_override_.reset(new base::ScopedPathOverride(
       base::DIR_LOCAL_APP_DATA, GetFakeLocalAppDataPath()));
   // Picasa also looks in the registry for an alternate path.
-  registry_override_.OverrideRegistry(HKEY_CURRENT_USER, L"hkcu_picasa");
+  registry_override_.OverrideRegistry(HKEY_CURRENT_USER);
 #endif  // OS_WIN
 
 #if defined(OS_MACOSX)
   mac_preferences_.reset(new MockPreferences);
 
   // iTunes override.
   base::FilePath itunes_xml =
       GetFakeITunesRootPath().AppendASCII("iTunes Library.xml");
   mac_preferences_->AddTestItem(
       base::mac::NSToCFCast(iapps::kITunesRecentDatabasePathsKey),
@@ skipping 18 matching lines @@
 
 base::FilePath MakeMediaGalleriesTestingPath(const std::string& dir) {
 #if defined(OS_WIN)
   return base::FilePath(FILE_PATH_LITERAL("C:\\")).AppendASCII(dir);
 #elif defined(OS_POSIX)
   return base::FilePath(FILE_PATH_LITERAL("/")).Append(dir);
 #else
   NOTREACHED();
 #endif
 }