Fix symmetry of Maybe() predicate. Fix bug in NowContains() predicate.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 47 matching lines @@
   'test-weaksets/WeakSet_Shrinking': [FAIL],
 
   # Boot up memory use is bloated in debug mode.
   'test-mark-compact/BootUpMemoryUse': [PASS, PASS, ['mode == debug', FAIL]],
 
   # This tests only that the preparser and parser agree, so there is no point in
   # running several variants. Note that this still takes ages, because there
   # are actually 13 * 38 * 5 * 128 = 316160 individual tests hidden here.
   'test-parsing/ParserSync': [PASS, NO_VARIANTS],
 
+  # This tests only the type system, so there is no point in running several
+  # variants.
+  'test-types/*': [PASS, NO_VARIANTS],
+
   # BUG(2999).
   'test-cpu-profiler/CollectCpuProfile': [PASS, FLAKY],
 
   ############################################################################
   # Slow tests.
   'test-api/Threading1': [PASS, ['mode == debug', SLOW]],
   'test-api/Threading2': [PASS, ['mode == debug', SLOW]],
   'test-api/Threading3': [PASS, ['mode == debug', SLOW]],
   'test-api/Threading4': [PASS, ['mode == debug', SLOW]],
   'test-strings/StringOOM*': [PASS, ['mode == debug', SKIP]],
@@ skipping 230 matching lines @@
   'test-api/Float32Array' : [SKIP],
   'test-api/Float64Array' : [SKIP],
   'test-api/Regress2333' : [SKIP],
   'test-alloc/StressHandles' : [SKIP],
   'test-alloc/StressJS' : [SKIP],
   'test-accessors/HandleScopePop' : [SKIP],
   'test-accessors/Gc' : [SKIP],
 
 }],  # 'arch == nacl_ia32 or arch == nacl_x64'
 ]