Add multiplexing of message pipes in the new EDK.

content/browser/renderer_host/render_process_host_impl.cc

 // Copyright 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 2431 matching lines @@
   // happens.
   NotificationService::current()->Notify(NOTIFICATION_RENDERER_PROCESS_CREATED,
                                          Source<RenderProcessHost>(this),
                                          NotificationService::NoDetails());
 
 #if defined(MOJO_SHELL_CLIENT)
   // Send the mojo shell handle to the renderer.
   SendExternalMojoShellHandleToChild(GetHandle(), this);
 #endif
 
-#if defined(OS_WIN)
-  // TODO(jam): enable on POSIX
   if (base::CommandLine::ForCurrentProcess()->HasSwitch("use-new-edk") &&
       child_process_launcher_.get()) {
     base::ProcessHandle process_handle =
         child_process_launcher_->GetProcess().Handle();
     mojo::embedder::ScopedPlatformHandle client_pipe =
         mojo::embedder::ChildProcessLaunched(process_handle);
     Send(new ChildProcessMsg_SetMojoParentPipeHandle(
         IPC::GetFileHandleForProcess(
 #if defined(OS_WIN)
                                      client_pipe.release().handle,
 #else
                                      client_pipe.release().fd,
 #endif
                                      process_handle, true)));
   }
-#endif
 
   // Allow Mojo to be setup before the renderer sees any Chrome IPC messages.
   // This way, Mojo can be safely used from the renderer in response to any
   // Chrome IPC message.
   mojo_application_host_->Activate(this, GetHandle());
 
   while (!queued_messages_.empty()) {
     Send(queued_messages_.front());
     queued_messages_.pop();
   }
@@ skipping 153 matching lines @@
 void RenderProcessHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   audio_renderer_host()->GetOutputControllers(callback);
 }
 
 BluetoothDispatcherHost* RenderProcessHostImpl::GetBluetoothDispatcherHost() {
   return bluetooth_dispatcher_host_.get();
 }
 
 }  // namespace content