Remove unused methods in Git and related classes.

third_party/WebKit/Tools/Scripts/webkitpy/common/checkout/git_unittest.py

 # Copyright 2016 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 unittest
 
 from webkitpy.common.system.executive import Executive, ScriptError
 from webkitpy.common.system.executive_mock import MockExecutive
 from webkitpy.common.system.filesystem import FileSystem
 from webkitpy.common.system.filesystem_mock import MockFileSystem
@@ skipping 39 matching lines @@
 
     def _mkdtemp(self, **kwargs):
         return str(self.filesystem.mkdtemp(**kwargs))
 
     def _remove(self, path):
         self.filesystem.remove(path)
 
     def _run(self, *args, **kwargs):
         return self.executive.run_command(*args, **kwargs)
 
-    def _run_silent(self, args, **kwargs):
-        self.executive.run_command(args, **kwargs)
-
     def _write_text_file(self, path, contents):
         self.filesystem.write_text_file(path, contents)
 
-    def _write_binary_file(self, path, contents):
-        self.filesystem.write_binary_file(path, contents)
-
-    def _make_diff(self, command, *args):
-        # We use this wrapper to disable output decoding. diffs should be treated as
-        # binary files since they may include text files of multiple different encodings.
-        return self._run([command, 'diff'] + list(args), decode_output=False)
-
-    def _git_diff(self, *args):
-        return self._make_diff('git', *args)
-
     def test_add_list(self):
         self._chdir(self.untracking_checkout_path)
         git = self.untracking_git
         self._mkdir('added_dir')
         self._write_text_file('added_dir/added_file', 'new stuff')
         print self._run(['ls', 'added_dir'])
         print self._run(['pwd'])
         print self._run(['cat', 'added_dir/added_file'])
         git.add_list(['added_dir/added_file'])
         self.assertIn('added_dir/added_file', git.added_files())
@@ skipping 152 matching lines @@
         # pylint: disable=protected-access
         git._run_git = lambda args: '\x00'.join(status_lines) + '\x00'
         self.assertEqual(
             git.unstaged_changes(),
             {
                 'd/modified.txt': 'M',
                 'd/deleted.txt': 'D',
                 'd/untracked.txt': '?',
                 'a': '?',
             })