VAAPI Wrapper: refactor management of drm file

content/gpu/gpu_main.cc

Index: content/gpu/gpu_main.cc
diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
index eebb732a6ecf032403aceece74c2d337e6646900..c6a59fc9c19c745e8eb5ad78dab52603d61b279b 100644
--- a/content/gpu/gpu_main.cc
+++ b/content/gpu/gpu_main.cc
@@ -62,6 +62,10 @@
 #include "content/common/sandbox_mac.h"
 #endif
 
+#if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+#include "content/common/gpu/media/vaapi_wrapper.h"
+#endif
+
 #if defined(SANITIZER_COVERAGE)
 #include <sanitizer/common_interface_defs.h>
 #include <sanitizer/coverage_interface.h>
@@ -218,6 +222,10 @@ int GpuMain(const MainFunctionParams& parameters) {
   // commandline switches.
   GetGpuInfoFromCommandLine(gpu_info, command_line);
 
+#if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
+  VaapiWrapper::PreSandboxInitialization();
+#endif
+
   // Warm up resources that don't need access to GPUInfo.
   if (WarmUpSandbox(command_line)) {
 #if defined(OS_LINUX)