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

content/public/common/sandbox_linux.h

Index: content/public/common/sandbox_linux.h
diff --git a/content/public/common/sandbox_linux.h b/content/public/common/sandbox_linux.h
index a9be3b5470ea5bf3895887bee9847b1e123d813e..c29c9f107cbc6ef6310fb96c3ff332694fbd2399 100644
--- a/content/public/common/sandbox_linux.h
+++ b/content/public/common/sandbox_linux.h
@@ -26,6 +26,9 @@ enum LinuxSandboxStatus {
   // The Yama LSM module is present and enforcing.
   kSandboxLinuxYama = 1 << 4,
 
+  // seccomp-bpf sandbox is active and the kernel supports TSYNC.
+  kSandboxLinuxSeccompTSYNC = 1 << 5,
+
   // A flag that denotes an invalid sandbox status.
   kSandboxLinuxInvalid = 1 << 31,
 };