disable timing tests on windows.

tests/syscalls/nacl.scons

Index: tests/syscalls/nacl.scons
===================================================================
--- tests/syscalls/nacl.scons	(revision 5515)
+++ tests/syscalls/nacl.scons	(working copy)
@@ -7,6 +7,10 @@
 
 Import('env')
 
+time_test_is_broken_on_this_os=False
+if 'TRUSTED_ENV' in env and env['TRUSTED_ENV'].Bit('windows'):
+  time_test_is_broken_on_this_os=True
+
 env.ComponentLibrary('syscall_test_framework', ['test.cc'])
 
 env.ComponentProgram('syscalls.nexe',
@@ -122,6 +126,9 @@
                        ['small_tests', 'sel_ldr_tests'],
                        'run_sysbrk_test')
 
+# These are timing tests, so we only run on real hardware
+is_on_vm = env.Bit('running_on_vm')
+
 # additions to add syscall tests 40-42
 env.ComponentProgram('timefuncs_test.nexe',
                      ['timefuncs_test.cc'],
@@ -134,18 +141,17 @@
 env.AddNodeToTestSuite(node,
                        ['small_tests', 'sel_ldr_tests'],
                        'run_timefuncs_test',
-                      )
+                       is_broken=is_on_vm or time_test_is_broken_on_this_os
+                       )
 
 raw_syscall_timefunc_objects = env.RawSyscallObjects(['timefuncs_test.cc'])
 env.ComponentProgram('raw_timefuncs_test.nexe',
                      raw_syscall_timefunc_objects,
                      EXTRA_LIBS=['syscall_test_framework'])
 
-# This is a timing test, so we only run on real hardware
-is_broken = env.Bit('running_on_vm')
 node = env.CommandSelLdrTestNacl('raw_timefuncs_test.out',
                                  command=[env.File('raw_timefuncs_test.nexe')])
 env.AddNodeToTestSuite(node,
                        ['small_tests', 'sel_ldr_tests'],
                        'run_raw_timefuncs_test',
-                       is_broken=is_broken)
+                       is_broken=is_on_vm or time_test_is_broken_on_this_os)