Factor out duplicated GioMemoryFileSnapshotCtor() + NaClAppLoadFile() calls

src/trusted/service_runtime/service_runtime.gyp

 # -*- gyp -*-
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'conditions': [
       ['OS=="linux"', {
         'syscall_handler': [
@@ skipping 18 matching lines @@
   ],
   'target_defaults': {
     'variables':{
       'target_base': 'none',
     },
     'target_conditions': [
       ['target_base=="sel"', {
         'sources': [
           'dyn_array.c',
           'elf_util.c',
+          'load_file.c',
           'nacl_all_modules.c',
           'nacl_app_thread.c',
           'nacl_bootstrap_channel_error_reporter.c',
           'nacl_copy.c',
           'nacl_desc_effector_ldr.c',
           'nacl_desc_postmessage.c',
           'nacl_error_gio.c',
           'nacl_error_log_hook.c',
           'nacl_globals.c',
           'nacl_kernel_service.c',
@@ skipping 350 matching lines @@
             '<(DEPTH)/native_client/src/trusted/gio/gio_wrapped_desc.gyp:gio_wrapped_desc64',
           ],
           'sources': [
             'nacl_test_injection_main.c',
           ],
         },
       ],
     }],
   ]
 }