Typo police.

chrome/installer/mac/dirdiffer.sh

 #!/bin/bash -p
 
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+# Copyright (c) 2011 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.
 
 # usage: dirdiffer.sh old_dir new_dir patch_dir
 #
 # dirdiffer creates a patch directory patch_dir that represents the difference
 # between old_dir and new_dir. patch_dir can be used with dirpatcher to
 # recreate new_dir given old_dir.
 #
 # dirdiffer operates recursively, properly handling ordinary files, symbolic
@@ skipping 42 matching lines @@
 # exits with a nonzero status, and patch_dir should not be used.
 #
 # Environment variables:
 # DIRDIFFER_EXCLUDE
 #   When an entry in new_dir matches this regular expression, it will not be
 #   included in patch_dir. All prospective paths in new_dir will be matched
 #   against this regular expression, including directories. If a directory
 #   matches this pattern, dirdiffer will also ignore the directory's contents.
 # DIRDIFFER_NO_DIFF
 #   When an entry in new_dir matches this regular expression, it will not be
-#   represented in patch_dir by a $gbs file prepared by goobsdif. It will only
+#   represented in patch_dir by a $gbs file prepared by goobsdiff. It will only
 #   appear as a $bz2, $gz, or $raw file. Only files in new_dir, not
 #   directories,  will be matched against this regular expression.
 #
 # Exit codes:
 #  0  OK
 #  1  Unknown failure
 #  2  Incorrect number of parameters
 #  3  Input directories do not exist or are not directories
 #  4  Output directory already exists
 #  5  Parent of output directory does not exist or is not a directory
@@ skipping 349 matching lines @@
   unset g_cleanup[${#g_cleanup[@]}]
 
   if [[ -n "${rsync_output}" ]]; then
     err "verification failed"
     exit 16
   fi
 }
 
 # shell_safe_path ensures that |path| is safe to pass to tools as a
 # command-line argument. If the first character in |path| is "-", "./" is
-# prepended to it. The possibily-modified |path| is output.
+# prepended to it. The possibly-modified |path| is output.
 shell_safe_path() {
   local path="${1}"
   if [[ "${path:0:1}" = "-" ]]; then
     echo "./${path}"
   else
     echo "${path}"
   fi
 }
 
 dirs_contained() {
@@ skipping 87 matching lines @@
   trap - EXIT
 }
 
 if [[ ${#} -ne 3 ]]; then
   usage
   exit 2
 fi
 
 main "${@}"
 exit ${?}