[Android] Fix Microdump generation when Seccomp-BPF is enabled.

sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc

Index: sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
diff --git a/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc b/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
index 4b98366c69760342fbfacaf218fb37f647dce481..57bffc08424b93662f4db9e5c004e8c0f9662955 100644
--- a/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
+++ b/sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.cc
@@ -52,6 +52,10 @@
 #define PR_SET_TIMERSLACK_PID 41
 #endif
 
+#ifndef PR_SET_PTRACER
+#define PR_SET_PTRACER 0x59616d61
+#endif
+
 #endif  // defined(OS_ANDROID)
 
 #if defined(__arm__) && !defined(MAP_STACK)
@@ -143,7 +147,7 @@ ResultExpr RestrictPrctl() {
       .CASES((PR_GET_NAME, PR_SET_NAME, PR_GET_DUMPABLE, PR_SET_DUMPABLE
 #if defined(OS_ANDROID)
               ,
-              PR_SET_VMA, PR_SET_TIMERSLACK_PID
+              PR_SET_VMA, PR_SET_TIMERSLACK_PID, PR_SET_PTRACER
 #endif
               ),
              Allow())