Revert of Turn components/crash into a layered component.

components/crash/app/breakpad_mac_stubs.mm

+// Copyright 2013 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.
+
+#import "components/crash/app/breakpad_mac.h"
+
+#import <Foundation/Foundation.h>
+
+// Stubbed out versions of breakpad integration functions so we can compile
+// without linking in Breakpad.
+
+namespace breakpad {
+
+bool IsCrashReporterEnabled() {
+  return false;
+}
+
+void InitCrashProcessInfo(const std::string& process_type_switch) {
+}
+
+void InitCrashReporter(const std::string& process_type) {
+}
+
+}  // namespace breakpad