Change DumpProcessWithoutCrash to use load-time dynamic linking

chrome_elf/crash/crash_helper.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 CHROME_ELF_CRASH_CRASH_HELPER_H_
 #define CHROME_ELF_CRASH_CRASH_HELPER_H_
 
 #include <windows.h>
 
 // Keep all crash-related APIs here.  All other chrome_elf code should call here
 // for crash support.
 namespace elf_crash {
 
 // Init the crash handling system for entire process.
 bool InitializeCrashReporting();
 
 // Any late cleanup of the crash handling system.
 void ShutdownCrashReporting();
 
 // Permanently disables subsequent calls to
 // kernel32!SetUnhandledExceptionFilter(), see comment in .cc for why this is
 // needed.
 void DisableSetUnhandledExceptionFilter();
 
 // Exception handler for exceptions in chrome_elf which need to be passed on to
 // the next handler in the chain. Examples include exceptions in DllMain,
 // blacklist interception code, etc.
 // Note: the handler takes a minidump.
 int GenerateCrashDump(EXCEPTION_POINTERS* exception_pointers);
-}
+
+// Generate a crash dump by calling into crashpad.
+void DumpWithoutCrashing();
+
+}  // namespace elf_crash
 
 #endif  // CHROME_ELF_CRASH_CRASH_HELPER_H_