Address scottmg comments from https://codereview.chromium.org/1003273007/.

test/mac/gyptest-lto.py

 #!/usr/bin/env python
 
 # Copyright (c) 2015 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Verifies that LTO flags work.
 """
 
 import TestGyp
 
 import os
 import re
 import subprocess
 import sys
 
 if sys.platform == 'darwin':
   test = TestGyp.TestGyp(formats=['ninja', 'make', 'xcode'])
-  #if test.format == 'xcode-ninja':
-  #  test.skip_test()
   CHDIR = 'lto'
   test.run_gyp('test.gyp', chdir=CHDIR)
 
   test.build('test.gyp', test.ALL, chdir=CHDIR)
 
   def ObjPath(srcpath, target):
     # TODO: Move this into TestGyp if it's needed elsewhere.
     if test.format == 'xcode':
       return os.path.join(CHDIR, 'build', 'test.build', 'Default',
                           target + '.build', 'Objects-normal', 'x86_64',
@@ skipping 26 matching lines @@
   ObjType(ObjPath('cfile', 'lto_static'), 'llvm')
   ObjType(ObjPath('ccfile', 'lto_static'), 'llvm')
   ObjType(ObjPath('mfile', 'lto_static'), 'llvm')
   ObjType(ObjPath('mmfile', 'lto_static'), 'llvm')
   ObjType(ObjPath('asmfile', 'lto_static'), 'mach-o')
 
   test.pass_test()
 
   # TODO: Probably test for -object_path_lto too, else dsymutil won't be
   # useful maybe?