Add VaapiVideoEncodeAccelerator for HW-accelerated video encode.

content/common/sandbox_linux/bpf_gpu_policy_linux.cc

Index: content/common/sandbox_linux/bpf_gpu_policy_linux.cc
diff --git a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
index d6b54f8ef55abd7bd96b4565eaa0c153e6ed39cd..22de352c624267d9edaf86513faa0b6bb40b1544 100644
--- a/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
+++ b/content/common/sandbox_linux/bpf_gpu_policy_linux.cc
@@ -72,9 +72,10 @@ inline bool IsArchitectureArm() {
 #endif
 }
 
-bool IsAcceleratedVideoDecodeEnabled() {
+bool IsAcceleratedVideoEnabled() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-  return !command_line.HasSwitch(switches::kDisableAcceleratedVideoDecode);
+  return !command_line.HasSwitch(switches::kDisableAcceleratedVideoDecode) ||
+         command_line.HasSwitch(switches::kEnableVaapiAcceleratedVideoEncode);
 }
 
 intptr_t GpuSIGSYS_Handler(const struct arch_seccomp_data& args,
@@ -214,9 +215,9 @@ bool GpuProcessPolicy::PreSandboxHook() {
       std::vector<std::string>());
 
   if (IsArchitectureX86_64() || IsArchitectureI386()) {
-    // Accelerated video decode dlopen()'s some shared objects
+    // Accelerated video dlopen()'s some shared objects
     // inside the sandbox, so preload them now.
-    if (IsAcceleratedVideoDecodeEnabled()) {
+    if (IsAcceleratedVideoEnabled()) {
       const char* I965DrvVideoPath = NULL;
 
       if (IsArchitectureX86_64()) {