Move some basic early process init into Service Manager

services/service_manager/embedder/mac_init.mm

+// Copyright 2017 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 "services/service_manager/embedder/mac_init.h"
+
+#import <Cocoa/Cocoa.h>
+
+namespace service_manager {
+
+void InitializeMac() {
+  [[NSUserDefaults standardUserDefaults] registerDefaults:@{
+    // Exceptions routed to -[NSApplication reportException:] should crash
+    // immediately, as opposed being swallowed or presenting UI that gives the
+    // user a choice in the matter.
+    @"NSApplicationCrashOnExceptions" : @YES,
+
+    // Prevent Cocoa from turning command-line arguments into -[NSApplication
+    // application:openFile:], because they are handled directly. @"NO" looks
+    // like a mistake, but the value really is supposed to be a string.
+    @"NSTreatUnknownArgumentsAsOpen" : @"NO",
+  }];
+}
+
+}  // namespace service_manager