Support sharing of ContentMain and BrowserMain code with embedded use cases (try #3).

content/app/content_main.h

-// Copyright (c) 2011 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 CONTENT_APP_CONTENT_MAIN_H_
-#define CONTENT_APP_CONTENT_MAIN_H_
-#pragma once
-
-#include "build/build_config.h"
-#include "content/common/content_export.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#endif
-
-namespace sandbox {
-struct SandboxInterfaceInfo;
-}
-
-namespace content {
-
-class ContentMainDelegate;
-
-// ContentMain should be called from the embedder's main() function to do the
-// initial setup for every process. The embedder has a chance to customize
-// startup using the ContentMainDelegate interface. The embedder can also pass
-// in NULL for |delegate| if they don't want to override default startup.
-#if defined(OS_WIN)
-
-// |sandbox_info| should be initialized using InitializeSandboxInfo from
-// content_main_win.h
-CONTENT_EXPORT int ContentMain(HINSTANCE instance,
-                               sandbox::SandboxInterfaceInfo* sandbox_info,
-                               ContentMainDelegate* delegate);
-#else
-CONTENT_EXPORT int ContentMain(int argc,
-                               const char** argv,
-                               ContentMainDelegate* delegate);
-#endif
-
-}  // namespace content
-
-#endif  // CONTENT_APP_CONTENT_MAIN_H_