headless: Add support for minidump generation on Linux

headless/app/headless_shell_switches.h

 // Copyright 2016 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 HEADLESS_APP_HEADLESS_SHELL_SWITCHES_H_
 #define HEADLESS_APP_HEADLESS_SHELL_SWITCHES_H_
 
 #include "content/public/common/content_switches.h"
 
 namespace headless {
 namespace switches {
+extern const char kCrashDumpsDir[];
 extern const char kDeterministicFetch[];
 extern const char kDumpDom[];
 extern const char kHideScrollbars[];
 extern const char kProxyServer[];
 extern const char kRemoteDebuggingAddress[];
 extern const char kRepl[];
 extern const char kScreenshot[];
 extern const char kTimeout[];
 extern const char kUseGL[];
 extern const char kUserDataDir[];
 extern const char kVirtualTimeBudget[];
 extern const char kWindowSize[];
 
 // Switches which are replicated from content.
 using ::switches::kHostResolverRules;
 using ::switches::kRemoteDebuggingPort;
 
 }  // namespace switches
 }  // namespace headless
 
 #endif  // HEADLESS_APP_HEADLESS_SHELL_SWITCHES_H_