[MIPS] Add seccomp bpf support

sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc

Index: sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc
diff --git a/sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc b/sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc
index 0341d2f95db055f0eba10bb68de5e172d5f92b54..fe2a0fd4bc758031a39179e1c2394daa7cd56cc0 100644
--- a/sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc
+++ b/sandbox/linux/seccomp-bpf/sandbox_bpf_unittest.cc
@@ -11,6 +11,7 @@
 #include <sys/types.h>
 #include <sys/utsname.h>
 #include <unistd.h>
+#include <sys/socket.h>
 
 #if defined(ANDROID)
 // Work-around for buggy headers in Android's NDK
@@ -650,7 +651,7 @@ BPF_TEST_C(SandboxBPF, SigBus, RedirectAllSyscallsPolicy) {
   // more complex uses of signals where our use of the SIGBUS mask is not
   // 100% transparent. This is expected behavior.
   int fds[2];
-  BPF_ASSERT(pipe(fds) == 0);
+  BPF_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, fds) == 0);
   bus_handler_fd_ = fds[1];
   struct sigaction sa = {};
   sa.sa_sigaction = SigBusHandler;