[views-mus] Prevent creating a native OzonePlatform in mus tests.

ui/views/views_test_suite.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 "ui/views/views_test_suite.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/path_service.h"
@@ skipping 35 matching lines @@
 #if defined(OS_MACOSX)
   gpu::ImageTransportSurface::SetAllowOSMesaForTesting(true);
 #endif
 
   ui::RegisterPathProvider();
 
   base::FilePath ui_test_pak_path;
   ASSERT_TRUE(PathService::Get(ui::UI_TEST_PAK, &ui_test_pak_path));
   ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
 #if defined(USE_AURA)
-  env_ = aura::Env::CreateInstance();
+  InitializeEnv();
 #endif
 }
 
 void ViewsTestSuite::Shutdown() {
 #if defined(USE_AURA)
-  env_.reset();
+  DestroyEnv();
 #endif
   ui::ResourceBundle::CleanupSharedInstance();
   base::TestSuite::Shutdown();
 }
 
+#if defined(USE_AURA)
+void ViewsTestSuite::InitializeEnv() {
+  env_ = aura::Env::CreateInstance();
+}
+
+void ViewsTestSuite::DestroyEnv() {
+  env_.reset();
+}
+#endif
+
 }  // namespace views