Always use ChannelMojo for content child processes.

components/nacl/loader/nonsfi/nonsfi_listener.cc

 // Copyright 2014 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 "components/nacl/loader/nonsfi/nonsfi_listener.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/file_descriptor_posix.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/posix/global_descriptors.h"
 #include "base/rand_util.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
 #include "components/nacl/common/nacl_messages.h"
 #include "components/nacl/common/nacl_types.h"
 #include "components/nacl/loader/nacl_trusted_listener.h"
 #include "components/nacl/loader/nonsfi/nonsfi_main.h"
 #include "content/public/common/content_descriptors.h"
 #include "content/public/common/mojo_channel_switches.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_channel_handle.h"
-#include "ipc/ipc_switches.h"
 #include "ipc/ipc_sync_channel.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/scoped_ipc_support.h"
 #include "native_client/src/public/nonsfi/irt_random.h"
 #include "ppapi/nacl_irt/irt_manifest.h"
 #include "ppapi/nacl_irt/plugin_startup.h"
 
 #if !defined(OS_NACL_NONSFI)
 #error "This file must be built for nacl_helper_nonsfi."
 #endif
@@ skipping 112 matching lines @@
   CHECK(params.nexe_file != IPC::InvalidPlatformFileForTransit());
   CHECK(params.nexe_file_path_metadata.empty());
 
   ppapi::RegisterPreopenedDescriptorsNonSfi(key_fd_map_.release());
 
   MainStart(IPC::PlatformFileForTransitToPlatformFile(params.nexe_file));
 }
 
 }  // namespace nonsfi
 }  // namespace nacl