Remove ChildProcessMsg_SetMojoParentPipeHandle message.

content/browser/browser_child_process_host_impl.cc

 // 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.
 
 #include "content/browser/browser_child_process_host_impl.h"
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/dump_without_crashing.h"
@@ skipping 389 matching lines @@
   notify_child_disconnected_ = false;
   delete delegate_;  // Will delete us
 }
 
 void BrowserChildProcessHostImpl::OnProcessLaunched() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   const base::Process& process = child_process_->GetProcess();
   DCHECK(process.IsValid());
 
-  mojo::edk::ScopedPlatformHandle client_pipe =
-      mojo::edk::ChildProcessLaunched(process.Handle());
-  Send(new ChildProcessMsg_SetMojoParentPipeHandle(
-      IPC::GetPlatformFileForTransit(client_pipe.release().handle, true)));
-
 #if defined(OS_WIN)
   // Start a WaitableEventWatcher that will invoke OnProcessExitedEarly if the
   // child process exits. This watcher is stopped once the IPC channel is
   // connected and the exit of the child process is detecter by an error on the
   // IPC channel thereafter.
   DCHECK(!early_exit_watcher_.GetWatchedObject());
   early_exit_watcher_.StartWatchingOnce(process.Handle(), this);
 #endif
 
   // TODO(rvargas) crbug.com/417532: Don't store a handle.
@@ skipping 15 matching lines @@
 
 #if defined(OS_WIN)
 
 void BrowserChildProcessHostImpl::OnObjectSignaled(HANDLE object) {
   OnChildDisconnected();
 }
 
 #endif
 
 }  // namespace content