Remove unused methods in Git and related classes.

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

 # Copyright (c) 2009, 2010, 2011 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple 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
@@ skipping 157 matching lines @@
             return {}  # No changes.
         unstaged_changes = {}
         for line in change_lines.split('\x00'):
             assert len(line) >= 4, 'Unexpected change line format %s' % line
             if line[1] == ' ':
                 continue  # Already staged for commit.
             path = line[3:]
             unstaged_changes[path] = line[1]
         return unstaged_changes
 
-    def add_all(self, pathspec=None):
-        command = ['add', '--all']
-        if pathspec:
-            command.append(pathspec)
-        return self._run_git(command)
-
     def add_list(self, paths, return_exit_code=False):
         return self._run_git(['add'] + paths, return_exit_code=return_exit_code)
 
     def delete_list(self, paths):
         return self._run_git(['rm', '-f'] + paths)
 
     def move(self, origin, destination):
         return self._run_git(['mv', '-f', origin, destination])
 
     def exists(self, path):
@@ skipping 218 matching lines @@
         if self.current_branch() != self._branch_tracking_remote_master():
             return False
         if len(self._local_commits(self._branch_tracking_remote_master())) > 0:
             return False
         return True
 
     def ensure_cleanly_tracking_remote_master(self):
         self._discard_working_directory_changes()
         self._run_git(['checkout', '-q', self._branch_tracking_remote_master()])
         self._discard_local_commits()