Remove obsolete methods from IPC::Channel and related classes.

content/public/common/sandboxed_process_launcher_delegate.h

 // Copyright (c) 2012 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_PUBLIC_COMMON_SANDBOXED_PROCESS_LAUNCHER_DELEGATE_H_
 #define CONTENT_PUBLIC_COMMON_SANDBOXED_PROCESS_LAUNCHER_DELEGATE_H_
 
 #include <cstddef>
 
 #include "base/environment.h"
@@ skipping 43 matching lines @@
   virtual void PostSpawnTarget(base::ProcessHandle process) {}
 
 #elif defined(OS_POSIX)
 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
   // Override this to return true to use the setuid sandbox.
   virtual ZygoteHandle* GetZygote();
 #endif  // !defined(OS_MACOSX) && !defined(OS_ANDROID)
 
   // Override this if the process needs a non-empty environment map.
   virtual base::EnvironmentMap GetEnvironment();
-
-  // Return the file descriptor for the IPC channel.
-  virtual base::ScopedFD TakeIpcFd() = 0;
 #endif
 
   // Returns the SandboxType to enforce on the process, or SANDBOX_TYPE_INVALID
   // for no sandbox policy.
   virtual SandboxType GetSandboxType();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SANDBOXED_PROCESS_LAUNCHER_DELEGATE_H_