[catapult] Roll forward Chrome reference builds

dependency_manager/dependency_manager/dependency_manager_util_unittest.py

 # Copyright 2015 The Chromium 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 shutil
 import stat
 import sys
 import tempfile
 import unittest
@@ skipping 146 matching lines @@
     except:
       if os.path.isfile(archive_path):
         os.remove(archive_path)
       raise
 
     unzip_path = os.path.join(tempfile.gettempdir(), str(uuid.uuid4()))
     dependency_manager_util.UnzipArchive(archive_path, unzip_path)
     dependency_manager_util.RemoveDir(unzip_path)
 
   def testUnzipFileFailure(self):
+    # zipfile is not used on MacOS. See crbug.com/700097.
+    if sys.platform.startswith('darwin'):
+      return
     unzip_path = os.path.join(tempfile.gettempdir(), str(uuid.uuid4()))
     self.assertFalse(os.path.exists(unzip_path))
     with mock.patch(
         'dependency_manager.dependency_manager_util.zipfile.ZipFile.extractall'  # pylint: disable=line-too-long
         ) as zipfile_mock:
       zipfile_mock.side_effect = IOError
       self.assertRaises(
           IOError, dependency_manager_util.UnzipArchive, self.archive_path,
           unzip_path)
     self.AssertExpectedDirFiles(self.tmp_dir)
     self.assertFalse(os.path.exists(unzip_path))
 
   def testVerifySafeArchivePasses(self):
     with zipfile.ZipFile(self.archive_path) as archive:
       dependency_manager_util.VerifySafeArchive(archive)
 
   def testVerifySafeArchiveFailsOnRelativePathWithPardir(self):
     tmp_file = tempfile.NamedTemporaryFile(delete=False)
     tmp_file_name = tmp_file.name
     tmp_file.write('Bad file!')
     tmp_file.close()
     with zipfile.ZipFile(self.archive_path, 'w') as archive:
       archive.write(tmp_file_name, '../../foo')
       self.assertRaises(
           exceptions.ArchiveError, dependency_manager_util.VerifySafeArchive,
           archive)