Linux sandbox: report TSYNC status in chrome://sandbox

content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc

Index: content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc
diff --git a/content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc b/content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc
index 71138582c85f83d66cb93a7b1f09a478ec8413ae..9be46ec1c322124017a34f2d882ce376060e7ac2 100644
--- a/content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc
+++ b/content/common/sandbox_linux/sandbox_seccomp_bpf_linux.cc
@@ -259,6 +259,14 @@ bool SandboxSeccompBPF::SupportsSandbox() {
   return false;
 }
 
+bool SandboxSeccompBPF::SupportsSandboxWithTsync() {
+#if defined(USE_SECCOMP_BPF)
+  return SandboxBPF::SupportsSeccompSandbox(
+      SandboxBPF::SeccompLevel::MULTI_THREADED);
+#endif
+  return false;
+}
+
 bool SandboxSeccompBPF::StartSandbox(const std::string& process_type,
                                      base::ScopedFD proc_task_fd) {
 #if defined(USE_SECCOMP_BPF)