Revert of On W3C test import, always skip large files that may fail to upload.

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

 # Copyright (C) 2009 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 106 matching lines @@
 
         self.files[destination] = self.files[source]
         self.written_files[destination] = self.files[source]
 
     def dirname(self, path):
         return self._split(path)[0]
 
     def exists(self, path):
         return self.isfile(path) or self.isdir(path)
 
-    def getsize(self, path):
-        if not self.exists(path):
-            self._raise_not_found(path)
-        return len(self.read_binary_file(path))
-
     def files_under(self, path, dirs_to_skip=None, file_filter=None):
         dirs_to_skip = dirs_to_skip or []
 
         filter_all = lambda fs, dirpath, basename: True
 
         file_filter = file_filter or filter_all
         files = []
         if self.isfile(path):
             if file_filter(self, self.dirname(path), self.basename(path)) and self.files[path] is not None:
                 files.append(path)
@@ skipping 358 matching lines @@
         return self.data.readline(length)
 
     def __iter__(self):
         return self.data.__iter__()
 
     def next(self):
         return self.data.next()
 
     def seek(self, offset, whence=os.SEEK_SET):
         self.data.seek(offset, whence)