Use chromeos::Process in libchromeos.a instead of g_spawn_async.

SConstruct.chromiumos

 # Copyright (c) 2010 The Chromium OS 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 os
 import re
 import sys
 
 def GlibMarshalEmitter(target, source, env):
   """ Inputs:
@@ skipping 100 matching lines @@
   chromeos_update.cc
   chromeos_update_engine.cc
   libcros_service.cc
   libcros_servicer.cc
   marshal.glibmarshal.c
   network_proxy_resolver_handler.cc
   version_check.cc
 ''')
 
 env = base_env.Clone()
-env.Append(LIBS=['base', 'chromeos', 'rt', 'rootdev'])
+env.Append(LIBS=['chromeos', 'base', 'rt', 'rootdev'])
 
 # glib, dbus, and ibus environment
 env.ParseConfig('%s --cflags --libs dbus-1 glib-2.0 gudev-1.0 dbus-glib-1 ibus-1.0 libpcrecpp x11' % env['ENV']['PKG_CONFIG'])
 
 env.GlibMarshal('marshal.glibmarshal.c', 'marshal.list')
 
 ibus_component_dir = "%s%s" % (env['ENV']['SYSROOT'],
                                '/usr/share/ibus/component/')
 ime_whitelist_file = env['ENV']['SYSROOT'] + '/usr/share/chromeos-assets/' + \
                      'input_methods/whitelist.txt'
@@ skipping 27 matching lines @@
 env_test.Append(LIBS=['base', 'dl', 'rt', 'nss3'])
 
 env_test.ParseConfig('%s --cflags --libs gobject-2.0 dbus-glib-1 dbus-1 nss' % (
     env_test['ENV']['PKG_CONFIG']))
 env_test.Append(CCFLAGS=['-DOS_CHROMEOS'])
 
 env_gtest = env_test.Clone()
 env_gtest.Append(LIBS=['gtest'])
 
 env_gtest_main = env_test.Clone()
-env_gtest_main.Append(LIBS=['gtest', 'gtest_main', 'chromeos'])
+env_gtest_main.Append(LIBS=['gtest', 'gtest_main', 'chromeos', 'base'])
 env_gtest_main.ParseConfig('%s --cflags --libs libpcrecpp x11' % (
     env_test['ENV']['PKG_CONFIG']))
 
 env_network_monitor = env_test.Clone()
 env_network_monitor.Append(LIBS=['dbus-glib-1'])
 
 env_libcros_service_test = env.Clone()
 
 Load = base_env.Object('load.cc')
 
@@ skipping 29 matching lines @@
   env_libcros_service_test.Program(
       'libcros_service_tester',
       ['libcros_service_tester.cc',
        'marshal.glibmarshal.c']),
 ]
 libcros_service_test_alias = \
     Alias('libcros_service_test', libcros_service_tests)
 AlwaysBuild(libcros_service_test_alias)
 
 Alias('crosapi', base_env.StaticLibrary('crosapi', Load), CCFLAGS='-ggdb')