Add ExcServerCopyState()

handler/mac/crash_report_exception_handler.cc

Index: handler/mac/crash_report_exception_handler.cc
diff --git a/handler/mac/crash_report_exception_handler.cc b/handler/mac/crash_report_exception_handler.cc
index 404bfcac0ae20abde6158eb4005353422ac570d9..1eaec68c90a9732e7848fe8069dc833896c3b783 100644
--- a/handler/mac/crash_report_exception_handler.cc
+++ b/handler/mac/crash_report_exception_handler.cc
@@ -193,6 +193,7 @@ kern_return_t CrashReportExceptionHandler::CatchMachException(
     upload_thread_->ReportPending();
   }
 
+  bool forwarded = false;
   if (client_options.system_crash_reporter_forwarding != TriState::kDisabled &&
       (exception == EXC_CRASH ||
        exception == EXC_RESOURCE ||
@@ -243,11 +244,20 @@ kern_return_t CrashReportExceptionHandler::CatchMachException(
           old_state_count,
           new_state_forward_count ? &new_state_forward[0] : nullptr,
           &new_state_forward_count);
-      MACH_LOG_IF(WARNING, kr != KERN_SUCCESS, kr)
-          << "UniversalExceptionRaise " << kSystemCrashReporterServiceName;
+      if (kr == KERN_SUCCESS) {
+        forwarded = true;
+      } else {
+        MACH_LOG(WARNING, kr)
+            << "UniversalExceptionRaise " << kSystemCrashReporterServiceName;
+      }
     }
   }
 
+  if (!forwarded) {
+    ExcServerCopyState(
+        behavior, old_state, old_state_count, new_state, new_state_count);
+  }
+
   return ExcServerSuccessfulReturnValue(behavior, false);
 }