Only dlopen() OMX/VAAPI libs in the GPU process, and only lazily dlsym() their symbols.

content/common/gpu/media/vaapi_video_decode_accelerator.cc

Index: content/common/gpu/media/vaapi_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/vaapi_video_decode_accelerator.cc b/content/common/gpu/media/vaapi_video_decode_accelerator.cc
index d54db04d18521171113f799347a0c520417c4a57..06b0823c10cbaf7fee5bbaa72ca75e5d0eceea0a 100644
--- a/content/common/gpu/media/vaapi_video_decode_accelerator.cc
+++ b/content/common/gpu/media/vaapi_video_decode_accelerator.cc
@@ -67,6 +67,10 @@ VaapiVideoDecodeAccelerator::VaapiVideoDecodeAccelerator(
       client_(client_ptr_factory_.GetWeakPtr()),
       decoder_thread_("VaapiDecoderThread") {
   DCHECK(client);
+  static bool vaapi_functions_initialized = PostSandboxInitialization();
+  RETURN_AND_NOTIFY_ON_FAILURE(vaapi_functions_initialized,
+                               "Failed to initialize VAAPI libs",
+                               PLATFORM_FAILURE, );
 }
 
 VaapiVideoDecodeAccelerator::~VaapiVideoDecodeAccelerator() {
@@ -555,6 +559,16 @@ void VaapiVideoDecodeAccelerator::Destroy() {
   delete this;
 }
 
+// static
+void VaapiVideoDecodeAccelerator::PreSandboxInitialization() {
+  VaapiH264Decoder::PreSandboxInitialization();
+}
+
+// static
+bool VaapiVideoDecodeAccelerator::PostSandboxInitialization() {
+  return VaapiH264Decoder::PostSandboxInitialization();
+}
+
 void VaapiVideoDecodeAccelerator::OutputPicCallback(int32 input_id,
                                                     int32 output_id) {
   TRACE_EVENT2("Video Decoder", "VAVDA::OutputPicCallback",