Integrate fallback crash handling in chrome

chrome/install_static/install_util.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.
 
 // This file contains helper functions which provide information about the
 // current version of Chrome. This includes channel information, version
 // information etc. This functionality is provided by using functions in
 // kernel32 and advapi32. No other dependencies are allowed in this file.
 
 #ifndef CHROME_INSTALL_STATIC_INSTALL_UTIL_H_
@@ skipping 25 matching lines @@
 // Unify these constants with env_vars.h.
 extern const wchar_t kHeadless[];
 extern const wchar_t kShowRestart[];
 extern const wchar_t kRestartInfo[];
 extern const wchar_t kRtlLocale[];
 
 // TODO(ananta)
 // https://crbug.com/604923
 // Unify these constants with those defined in content_switches.h.
 extern const wchar_t kCrashpadHandler[];
+extern const wchar_t kFallbackHandler[];
 extern const wchar_t kProcessType[];
 extern const wchar_t kUserDataDirSwitch[];
 extern const wchar_t kUtilityProcess[];
 
 // Used for suppressing warnings.
 template <typename T> inline void IgnoreUnused(T) {}
 
 // Returns true if Chrome is running at system level.
 bool IsSystemInstall();
 
@@ skipping 123 matching lines @@
 // Returns the unadorned channel name based on the channel strategy for the
 // install mode.
 std::wstring DetermineChannel(const InstallConstants& mode, bool system_level);
 
 // Caches the |ProcessType| of the current process.
 extern ProcessType g_process_type;
 
 }  // namespace install_static
 
 #endif  // CHROME_INSTALL_STATIC_INSTALL_UTIL_H_