Make chrome_browser_tests work with irt=0 again

tests/srpc_hw/nacl.scons

 # -*- python -*-
 # Copyright (c) 2011 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_hw_libs = ['srpc', 'platform', 'gio', 'imc', 'imc_syscalls']
 
 srpc_hw_obj = env.ComponentObject('srpc_hw.o', 'srpc_hw.c')
 srpc_hw_nexe_name = 'srpc_hw_%s' % env.get('TARGET_FULLARCH')
 srpc_hw_nexe = env.ComponentProgram(srpc_hw_nexe_name,
                                     srpc_hw_obj,
                                     EXTRA_LIBS=srpc_hw_libs + [
-                                        'pthread',
+                                        '${PTHREAD_LIBS}',
                                         '${NON_PPAPI_BROWSER_LIBS}'])
 # srpc_hw_undecorated is necessary because srpc_hw_fd.html makes use of
 # __urlAsNaClDesc with a nexe name.
 # TODO(sehr): We can get rid of this hack if we make that API take a manifest
 # file, but it is currently planned for obsoletion also.
 srpc_hw_undecorated = env.ComponentProgram('srpc_hw',
                                            srpc_hw_obj,
                                            EXTRA_LIBS=srpc_hw_libs + [
-                                               'pthread',
+                                               '${PTHREAD_LIBS}',
                                                '${NON_PPAPI_BROWSER_LIBS}'])
 
 env.Publish(srpc_hw_nexe_name, 'run',
             ['srpc_hw.html',
              'srpc_hw.nmf',
              'srpc_hw_data.html',
              'srpc_hw_fd.html',
              srpc_hw_undecorated])
 
 srpc_hw_nonbrowser = env.ComponentProgram('srpc_hw_nonbrowser',
@@ skipping 42 matching lines @@
     'srpc_hw_fd_browser_test.out',
     url='srpc_hw_fd.html',
     files=env.ExtractPublishedFiles(srpc_hw_nexe_name),
     args=['--debug', '--enable_experimental_js'])
 
 env.AddNodeToTestSuite(node,
                        ['chrome_browser_tests'],
                        'run_srpc_hw_fd_chrome_browser_test',
                        is_flaky=True, # Don't subject Chrome to our problems.
                        is_broken=env.PPAPIBrowserTesterIsBroken())