Cherry-pick 275866@main (cf72395). rdar://124287051

    [git-webkit revert] Add tabs to separate reverted changes in commit message
    https://bugs.webkit.org/show_bug.cgi?id=270706
    rdar://problem/124287051

    Reviewed by Ryan Haddad.

    Adds indentation for the reverted changeset for better readability.

    * Tools/Scripts/libraries/webkitscmpy/webkitscmpy/program/revert.py:
    (Revert.create_revert_commit_msg):

    Canonical link: https://commits.webkit.org/275866@main

Canonical link: https://commits.webkit.org/272448.729@safari-7618-branch

Tools/Scripts/libraries/webkitscmpy/webkitscmpy/program/revert.py

@@ -155,13 +155,13 @@ def create_revert_commit_msg(cls, args, commit_objects, **kwargs):
             for line in commit.message.splitlines():
                 if not commit_title:
                     commit_title = line
-            bug_urls = [i.link for i in commit.issues]
+            bug_urls = ['    {}'.format(i.link) for i in commit.issues]
 
-            reverted_changeset += '\n{}\n'.format(commit_title)
+            reverted_changeset += '\n    {}\n'.format(commit_title)
             reverted_changeset += '\n'.join(bug_urls)
             if commit.identifier and commit.branch:
                 commit_identifiers.append('{}@{}'.format(commit.identifier, commit.branch))
-                reverted_changeset += '\nhttps://commits.webkit.org/{}@{}\n'.format(commit.identifier, commit.branch)
+                reverted_changeset += '\n    https://commits.webkit.org/{}@{}\n'.format(commit.identifier, commit.branch)
             else:
                 sys.stderr.write('Could not find "{}"'.format(', '.join(args.commit_id)) + '\n')
                 return None, None