Scons: Drop the uses_ppapi argument from CommandSelLdrTestNacl()

tests/manifest_file/nacl.scons

 # -*- python -*-
 # 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.
 
 Import('env')
 
 srpc_mf_obj = env.ComponentObject('srpc_manifest_file_test.o',
                                   'srpc_manifest_file_test.c')
 srpc_mf_nexe_name = env.ProgramNameForNmf('srpc_manifest_file_test')
@@ skipping 14 matching lines @@
 
 node = env.SelUniversalTest(
     'srpc_manifest_file_test.out',
     srpc_mf_nexe,
     sel_universal_flags=['--uses_reverse_service',
                          '--var', 'obj_file', srpc_mf_obj,
                          '--var', 'nexe_file', srpc_mf_nexe,
                          '--command_file',
                          env.File('srpc_manifest_file_test.stdin')],
     stdout_golden=env.File('srpc_manifest_file_test.stdout'),
-    # Slight misnomer: actually just enables the IRT.
-    uses_ppapi=True
+    uses_irt=True,
     )
 env.AddNodeToTestSuite(node,
                        ['small_tests'],
                        'run_srpc_manifest_file_test')
 
 # post message version
 
 pm_mf_obj = env.ComponentObject('pm_manifest_file_test.o',
                                 'pm_manifest_file_test.cc')
 pm_mf_nexe_name = env.ProgramNameForNmf('pm_manifest_file_test')
@@ skipping 90 matching lines @@
     url='irt_manifest_file_test.html',
     nmfs=['irt_manifest_file.nmf'],
     files=env.ExtractPublishedFiles(irt_mf_nexe_name),
     args=['--debug'],
     )
 env.AddNodeToTestSuite(node,
                        ['chrome_browser_tests'],
                        'run_irt_manifest_file_chrome_browser_test',
                        is_broken=env.PPAPIBrowserTesterIsBroken() or
                                  env.Bit('nacl_glibc'))