[Mac] Use Crashpad in the AlertNotificationService.xpc.

components/crash/content/app/crashpad.h

 // Copyright 2015 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.
 
 #ifndef COMPONENTS_CRASH_CONTENT_APP_CRASHPAD_H_
 #define COMPONENTS_CRASH_CONTENT_APP_CRASHPAD_H_
 
 #include <time.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
+#include "build/build_config.h"
+
+#if defined(OS_MACOSX)
+#include "base/mac/scoped_mach_port.h"
+#endif
+
+namespace crashpad {
+class CrashpadClient;
+}
 
 namespace crash_reporter {
 
 // Initializes Crashpad in a way that is appropriate for initial_client and
 // process_type.
 //
 // If initial_client is true, this starts crashpad_handler and sets it as the
 // exception handler. Child processes will inherit this exception handler, and
 // should specify false for this parameter. Although they inherit the exception
 // handler, child processes still need to call this function to perform
@@ skipping 23 matching lines @@
 void InitializeCrashpad(bool initial_client, const std::string& process_type);
 
 #if defined(OS_WIN)
 // This is the same as InitializeCrashpad(), but rather than launching a
 // crashpad_handler executable, relaunches the current executable with a command
 // line argument of --type=crashpad-handler.
 void InitializeCrashpadWithEmbeddedHandler(bool initial_client,
                                            const std::string& process_type);
 #endif  // OS_WIN
 
+// Returns the CrashpadClient for this process. This will lazily create it if
+// it does not already exist. This is called as part of InitializeCrashpad.
+crashpad::CrashpadClient& GetCrashpadClient();

[Mark Mentovai, 2017/03/15 19:38:43]

Non-const ref or pointer, either one is fine by me.

+
 // Enables or disables crash report upload, taking the given consent to upload
 // into account. Consent may be ignored, uploads may not be enabled even with
 // consent, but will only be enabled without consent when policy enforces crash
 // reporting. Whether reports upload is a property of the Crashpad database. In
 // a newly-created database, uploads will be disabled. This function only has an
 // effect when called in the browser process. Its effect is immediate and
 // applies to all other process types, including processes that are already
 // running.
 void SetUploadConsent(bool consent);
 
@@ skipping 39 matching lines @@
 // Returns the database path, if initializing in the browser process.
 base::FilePath PlatformCrashpadInitialization(bool initial_client,
                                               bool browser_process,
                                               bool embedded_handler);
 
 }  // namespace internal
 
 }  // namespace crash_reporter
 
 #endif  // COMPONENTS_CRASH_CONTENT_APP_CRASHPAD_H_