1 files changed, 36 insertions, 0 deletions
diff --git a/chromium/mojo/public/cpp/system/functions.cc b/chromium/mojo/public/cpp/system/functions.cc
new file mode 100644
index 00000000000..74aee1a0973
--- /dev/null
+++ b/chromium/mojo/public/cpp/system/functions.cc
@@ -0,0 +1,36 @@
+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "mojo/public/cpp/system/functions.h"
+
+#include "base/callback.h"
+#include "base/no_destructor.h"
+
+namespace mojo {
+
+namespace {
+
+DefaultProcessErrorHandler& GetDefaultProcessErrorHandler() {
+  static base::NoDestructor<DefaultProcessErrorHandler> handler;
+  return *handler;
+}
+
+void HandleError(const MojoProcessErrorDetails* details) {
+  const DefaultProcessErrorHandler& handler = GetDefaultProcessErrorHandler();
+  handler.Run(
+      std::string(details->error_message, details->error_message_length));
+}
+
+}  // namespace
+
+void SetDefaultProcessErrorHandler(DefaultProcessErrorHandler handler) {
+  // Ensure any previously set handler is wiped out.
+  MojoSetDefaultProcessErrorHandler(nullptr, nullptr);
+  auto& global_handler = GetDefaultProcessErrorHandler();
+  global_handler = std::move(handler);
+  if (global_handler)
+    MojoSetDefaultProcessErrorHandler(&HandleError, nullptr);
+}
+
+}  // namespace mojo