Revert of [Windows Sandbox] Turn on MITIGATION_EXTENSION_POINT_DISABLE.

chrome_elf/chrome_elf_main.cc

 // 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.
 
 #include "chrome_elf/chrome_elf_main.h"
 
 #include <windows.h>
 #include <algorithm>
 
 #include "base/lazy_instance.h"
 #include "base/strings/string16.h"
 #include "base/win/iat_patch_function.h"
 #include "build/build_config.h"
 #include "chrome/app/chrome_crash_reporter_client_win.h"
 #include "chrome/install_static/install_util.h"
 #include "chrome_elf/blacklist/blacklist.h"
 #include "chrome_elf/blacklist/crashpad_helper.h"
 #include "chrome_elf/chrome_elf_constants.h"
-#include "chrome_elf/chrome_elf_security.h"
 #include "components/crash/content/app/crashpad.h"
 #include "components/crash/core/common/crash_keys.h"
 
 namespace {
 
 base::LazyInstance<std::vector<crash_reporter::Report>>::Leaky g_crash_reports =
     LAZY_INSTANCE_INITIALIZER;
 
 // Gets the exe name from the full path of the exe.
 base::string16 GetExeName() {
@@ skipping 79 matching lines @@
 
 BOOL APIENTRY DllMain(HMODULE module, DWORD reason, LPVOID reserved) {
   if (reason == DLL_PROCESS_ATTACH) {
     InitializeCrashReportingForProcess();
     // CRT on initialization installs an exception filter which calls
     // TerminateProcess. We need to hook CRT's attempt to set an exception
     // handler and ignore it.
     DisableSetUnhandledExceptionFilter();
 
     install_static::InitializeProcessType();
-    if (install_static::g_process_type ==
-        install_static::ProcessType::BROWSER_PROCESS)
-      EarlyBrowserSecurity();
 
     __try {
       blacklist::Initialize(false);  // Don't force, abort if beacon is present.
     } __except(GenerateCrashDump(GetExceptionInformation())) {
     }
   }
   return TRUE;
 }