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diff --git a/externals/breakpad/src/client/mac/crash_generation/crash_generation_server.h b/externals/breakpad/src/client/mac/crash_generation/crash_generation_server.h
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+// Copyright 2010 Google LLC
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_
+#define GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_
+
+#include <stdint.h>
+
+#include <string>
+
+#include "common/mac/MachIPC.h"
+
+namespace google_breakpad {
+
+class ClientInfo;
+
+// Messages the server can read via its mach port
+enum {
+  kDumpRequestMessage     = 1,
+  kAcknowledgementMessage = 2,
+  kQuitMessage            = 3
+};
+
+// Exception details sent by the client when requesting a dump.
+struct ExceptionInfo {
+  int32_t exception_type;
+  int32_t exception_code;
+  int32_t exception_subcode;
+};
+
+class CrashGenerationServer {
+ public:
+  // WARNING: callbacks may be invoked on a different thread
+  // than that which creates the CrashGenerationServer.  They must
+  // be thread safe.
+  typedef void (*OnClientDumpRequestCallback)(void* context,
+                                              const ClientInfo& client_info,
+                                              const std::string& file_path);
+
+  typedef void (*OnClientExitingCallback)(void* context,
+                                          const ClientInfo& client_info);
+  // If a FilterCallback returns false, the dump will not be written.
+  typedef bool (*FilterCallback)(void* context);
+
+  // Create an instance with the given parameters.
+  //
+  // mach_port_name: Named server port to listen on.
+  // filter: Callback for a client to cancel writing a dump.
+  // filter_context: Context for the filter callback.
+  // dump_callback: Callback for a client crash dump request.
+  // dump_context: Context for client crash dump request callback.
+  // exit_callback: Callback for client process exit.
+  // exit_context: Context for client exit callback.
+  // generate_dumps: Whether to automatically generate dumps.
+  //     Client code of this class might want to generate dumps explicitly
+  //     in the crash dump request callback. In that case, false can be
+  //     passed for this parameter.
+  // dump_path: Path for generating dumps; required only if true is
+  //     passed for generateDumps parameter; NULL can be passed otherwise.
+  CrashGenerationServer(const char* mach_port_name,
+                        FilterCallback filter,
+                        void* filter_context,
+                        OnClientDumpRequestCallback dump_callback,
+                        void* dump_context,
+                        OnClientExitingCallback exit_callback,
+                        void* exit_context,
+                        bool generate_dumps,
+                        const std::string& dump_path);
+
+  ~CrashGenerationServer();
+
+  // Perform initialization steps needed to start listening to clients.
+  //
+  // Return true if initialization is successful; false otherwise.
+  bool Start();
+
+  // Stop the server.
+  bool Stop();
+
+ private:
+  // Return a unique filename at which a minidump can be written.
+  bool MakeMinidumpFilename(std::string& outFilename);
+
+  // Loop reading client messages and responding to them until
+  // a quit message is received.
+  static void* WaitForMessages(void* server);
+
+  // Wait for a single client message and respond to it. Returns false
+  // if a quit message was received or if an error occurred.
+  bool WaitForOneMessage();
+
+  FilterCallback filter_;
+  void* filter_context_;
+
+  OnClientDumpRequestCallback dump_callback_;
+  void* dump_context_;
+
+  OnClientExitingCallback exit_callback_;
+  void* exit_context_;
+
+  bool generate_dumps_;
+
+  std::string dump_dir_;
+
+  bool started_;
+
+  // The mach port that receives requests to dump from child processes.
+  ReceivePort receive_port_;
+
+  // The name of the mach port. Stored so the Stop method can message
+  // the background thread to shut it down.
+  std::string mach_port_name_;
+
+  // The thread that waits on the receive port.
+  pthread_t server_thread_;
+
+  // Disable copy constructor and operator=.
+  CrashGenerationServer(const CrashGenerationServer&);
+  CrashGenerationServer& operator=(const CrashGenerationServer&);
+};
+
+}  // namespace google_breakpad
+
+#endif  // GOOGLE_BREAKPAD_CLIENT_MAC_CRASH_GENERATION_CRASH_GENERATION_SERVER_H_