Add file permissions to filesystem_mock

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

Index: third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py b/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
index 65a9bd8a0578494f4319768dc7550f6732110e33..b8c28d4f97a06e0f5590cd7700ea995e0af74e14 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/common/system/filesystem.py
@@ -28,6 +28,7 @@
 
 """Wrapper object for the file system / source tree."""
 
+import shutil
 import codecs
 import errno
 import exceptions
@@ -274,3 +275,9 @@ class FileSystem(object):
     def splitext(self, path):
         """Return (dirname + os.sep + basename, '.' + ext)"""
         return os.path.splitext(path)
+
+    def make_executable(self, orig_path, new_path):
+        shutil.copymode(orig_path, new_path)
+
+    def is_executable(self, file_path):
+        return os.access(file_path, os.X_OK)