Pass Mach message trailers to server handler functions

client/simulate_crash_mac_test.cc

Index: client/simulate_crash_mac_test.cc
diff --git a/client/simulate_crash_mac_test.cc b/client/simulate_crash_mac_test.cc
index 8334e95d5b9321db202d9e778cf399ab95299752..faee61510b939f765d316ce3f3d7b3ebc0165616 100644
--- a/client/simulate_crash_mac_test.cc
+++ b/client/simulate_crash_mac_test.cc
@@ -89,6 +89,7 @@ class TestSimulateCrashMac final : public MachMultiprocess,
                                    mach_msg_type_number_t old_state_count,
                                    thread_state_t new_state,
                                    mach_msg_type_number_t* new_state_count,
+                                   const mach_msg_trailer_t* trailer,
                                    bool* destroy_complex_request) override {
     *destroy_complex_request = true;