VAAPI Wrapper: refactor management of drm file

content/common/gpu/media/video_decode_accelerator_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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 1620 matching lines @@
   // thread.
   base::MessageLoopForUI main_loop;
 #else
   base::MessageLoop main_loop;
 #endif  // OS_WIN || USE_OZONE
 
 #if defined(USE_OZONE)
   ui::OzonePlatform::InitializeForUI();
 #endif
 
+#if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+  content::VaapiWrapper::PreSandboxInitialization();
+#endif
+
   content::g_env =
       reinterpret_cast<content::VideoDecodeAcceleratorTestEnvironment*>(
           testing::AddGlobalTestEnvironment(
               new content::VideoDecodeAcceleratorTestEnvironment()));
 
   return RUN_ALL_TESTS();
 }