New NaCl zygote implementation 2

content/common/zygote_fork_delegate.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_COMMON_ZYGOTE_FORK_DELEGATE_H_
+#define CONTENT_COMMON_ZYGOTE_FORK_DELEGATE_H_
+#pragma once
+
+#include "base/basictypes.h"
+

[agl, 2011/06/20 17:28:55]

This file need a large number of comments, for each class and each method.

[Brad Chen, 2011/06/20 22:09:47]

Done.

+class ZygoteForkDelegate {
+ public:
+  ZygoteForkDelegate() {};
+  virtual ~ZygoteForkDelegate() {};
+  virtual void Init(const bool sandboxed,
+                    const int browserdesc,
+                    const int sandboxdesc) = 0;
+  virtual bool CanHelp(const std::string& process_type) = 0;
+  virtual pid_t Fork(const std::vector<int>& fds) = 0;
+};
+
+class NullForkDelegate : public ZygoteForkDelegate {
+ public:
+  NullForkDelegate() {};
+  ~NullForkDelegate() {};
+  virtual void Init(const bool sandboxed,
+                    const int browserdesc,
+                    const int sandboxdesc) {};
+  virtual bool CanHelp(const std::string& process_type) { return false; };
+  virtual pid_t Fork(const std::vector<int>& fds) { return -1; };
+};
+
+#endif  // CONTENT_COMMON_ZYGOTE_FORK_DELEGATE_H_