Add file permissions to filesystem_mock

third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py

 # Copyright (C) 2010 Google Inc. 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
@@ skipping 10 matching lines @@
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 """Wrapper object for the file system / source tree."""
 
+import stat
 import codecs
 import errno
 import exceptions
 import glob
 import hashlib
 import os
 import shutil
 import sys
 import tempfile
 import time
@@ skipping 226 matching lines @@
     def copytree(self, source, destination):
         shutil.copytree(source, destination)
 
     def split(self, path):
         """Return (dirname, basename + '.' + ext)"""
         return os.path.split(path)
 
     def splitext(self, path):
         """Return (dirname + os.sep + basename, '.' + ext)"""
         return os.path.splitext(path)
+
+    def make_executable(self, file_path):
+        os.chmod(file_path, stat.S_IXUSR)

[qyearsley, 2016/06/15 21:54:25]

Not sure if it makes a difference, but currently executable files in the
chromium repo on my workstation appear to have permissions -rwxr-x--- (mode 750)

So perhaps we may want to use:

  os.chmod(file_path, stat.S_IXUSR | stat.S_IXGRP)

+
+    def is_executable(self, file_path):
+        return os.access(file_path, os.X_OK)