Ignore the .git directory in sanitize_source_files, remove .git directory...

tools/sanitize_source_files.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Module that sanitizes source files with specified modifiers."""
 
 
 import commands
 import os
 import sys
 
 
 _FILE_EXTENSIONS_TO_SANITIZE = ['cpp', 'h', 'c', 'gyp', 'gypi']
 
-_SUBDIRS_TO_IGNORE = ['.svn', 'third_party']
+_SUBDIRS_TO_IGNORE = ['.git', '.svn', 'third_party']
 
 
 def SanitizeFilesWithModifiers(directory, file_modifiers, line_modifiers):
   """Sanitizes source files with the specified file and line modifiers.
 
   Args:
     directory: string - The directory which will be recursively traversed to
         find source files to apply modifiers to.
     file_modifiers: list - file-modification methods which should be applied to
         the complete file content (Eg: EOFOneAndOnlyOneNewlineAdder).
@@ skipping 116 matching lines @@
           CopywriteChecker,
           EOFOneAndOnlyOneNewlineAdder,
           SvnEOLChecker,
       ],
       line_modifiers=[
           CrlfReplacer,
           TabReplacer,
           TrailingWhitespaceRemover,
       ],
   ))