Use a dedicated command line flag for FIFO IPC channels on POSIX.

chrome/common/ipc_channel_posix.cc

 // Copyright (c) 2008 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 "chrome/common/ipc_channel_posix.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stddef.h>
 #include <sys/types.h>
@@ skipping 228 matching lines @@
 
 }  // namespace
 //------------------------------------------------------------------------------
 
 Channel::ChannelImpl::ChannelImpl(const std::wstring& channel_id, Mode mode,
                                   Listener* listener)
     : mode_(mode),
       is_blocked_on_write_(false),
       message_send_bytes_written_(0),
       uses_fifo_(CommandLine::ForCurrentProcess()->HasSwitch(
-                     switches::kTestingChannelID)),
+                     switches::kIPCUseFIFO)),
       server_listen_pipe_(-1),
       pipe_(-1),
       client_pipe_(-1),
       listener_(listener),
       waiting_connect_(true),
       processing_incoming_(false),
       factory_(this) {
   if (!CreatePipe(channel_id, mode)) {
     // The pipe may have been closed already.
     LOG(WARNING) << "Unable to create pipe named \"" << channel_id <<
@@ skipping 544 matching lines @@
 void Channel::GetClientFileDescriptorMapping(int *src_fd, int *dest_fd) {
   return channel_impl_->GetClientFileDescriptorMapping(src_fd, dest_fd);
 }
 
 void Channel::OnClientConnected() {
   return channel_impl_->OnClientConnected();
 }
 
 
 }  // namespace IPC