Preparing rollback in case things don't work out....

chrome/browser/nacl_process_host.h

-// Copyright (c) 2009 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_BROWSER_NACL_PROCESS_HOST_H_
-#define CHROME_BROWSER_NACL_PROCESS_HOST_H_
-
-#include "build/build_config.h"
-#include "chrome/common/child_process_host.h"
-#include "chrome/common/nacl_types.h"
-#include "native_client/src/shared/imc/nacl_imc.h"
-
-class ResourceMessageFilter;
-
-// Represents the browser side of the browser <--> NaCl communication
-// channel. There will be one NaClProcessHost per NaCl process
-// The browser is responsible for starting the NaCl process
-// when requested by the renderer.
-// After that, most of the communication is directly between NaCl plugin
-// running in the renderer and NaCl processes.
-class NaClProcessHost : public ChildProcessHost {
- public:
-  explicit NaClProcessHost(ResourceDispatcherHost *resource_dispatcher_host);
-  ~NaClProcessHost() {}
-
-  // Initialize the new NaCl process, returning true on success.
-  bool Launch(ResourceMessageFilter* renderer_msg_filter,
-              const int descriptor,
-              nacl::FileDescriptor *handle);
-
-  virtual void OnMessageReceived(const IPC::Message& msg);
-
- private:
-  bool LaunchSelLdr(ResourceMessageFilter* renderer_msg_filter,
-                    const int descriptor,
-                    const nacl::Handle handle);
-
-  bool SendStartMessage(base::ProcessHandle process,
-                        int descriptor,
-                        nacl::Handle handle);
-
-  // ResourceDispatcherHost::Receiver implementation:
-  virtual URLRequestContext* GetRequestContext(
-      uint32 request_id,
-      const ViewHostMsg_Resource_Request& request_data);
-
-  virtual bool CanShutdown() { return true; }
-
- private:
-  ResourceDispatcherHost* resource_dispatcher_host_;
-
-  DISALLOW_COPY_AND_ASSIGN(NaClProcessHost);
-};
-
-#endif  // CHROME_BROWSER_NACL_PROCESS_HOST_H_