Fix DCHECH errors on Windows

headless/lib/browser/headless_browser_impl.cc

 // Copyright 2015 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 "headless/lib/browser/headless_browser_impl.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 178 matching lines @@
 }
 
 HeadlessBrowserContext* HeadlessBrowserImpl::GetBrowserContextForId(
     const std::string& id) {
   auto find_it = browser_contexts_.find(id);
   if (find_it == browser_contexts_.end())
     return nullptr;
   return find_it->second.get();
 }
 
-#if !defined(OS_WIN)
+#if defined(OS_WIN)
+void RunChildProcessIfNeeded(HINSTANCE instance,
+                             sandbox::SandboxInterfaceInfo* sandbox_info) {
+  base::CommandLine::Init(0, nullptr);
+  HeadlessBrowser::Options::Builder builder(0, nullptr);
+  builder.SetInstance(instance);
+  builder.SetSandboxInfo(std::move(sandbox_info));
+#else
 void RunChildProcessIfNeeded(int argc, const char** argv) {
   base::CommandLine::Init(argc, argv);
+  HeadlessBrowser::Options::Builder builder(argc, argv);
+#endif  // defined(OS_WIN)
   const base::CommandLine& command_line(
       *base::CommandLine::ForCurrentProcess());
 
   if (!command_line.HasSwitch(::switches::kProcessType))
     return;
 
-  HeadlessBrowser::Options::Builder builder(argc, argv);
   if (command_line.HasSwitch(switches::kUserAgent)) {
     std::string ua = command_line.GetSwitchValueASCII(switches::kUserAgent);
     if (net::HttpUtil::IsValidHeaderValue(ua))
       builder.SetUserAgent(ua);
   }
 
   exit(RunContentMain(builder.Build(),
                       base::Callback<void(HeadlessBrowser*)>()));
 }
-#endif  // !defined(OS_WIN)
 
 int HeadlessBrowserMain(
     HeadlessBrowser::Options options,
     const base::Callback<void(HeadlessBrowser*)>& on_browser_start_callback) {
   DCHECK(!on_browser_start_callback.is_null());
 #if DCHECK_IS_ON()
   // The browser can only be initialized once.
   static bool browser_was_initialized;
   DCHECK(!browser_was_initialized);
   browser_was_initialized = true;
 
   // Child processes should not end up here.
   DCHECK(!base::CommandLine::ForCurrentProcess()->HasSwitch(
       ::switches::kProcessType));
 #endif
   return RunContentMain(std::move(options),
                         std::move(on_browser_start_callback));
 }
 
 }  // namespace headless