Change to 72 column reference in git cl upload message

76 columns is fine for most patches but reverts will eat another
4 spaces in indentation. For the sake of revert clarity this reference
line is reduced to 72 columns.

Review URL: https://chromiumcodereview.appspot.com/16152005

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@203530 0039d316-1c4b-4281-b951-d872f2087c98

git_cl.py

@@ -864,8 +864,8 @@ class ChangeDescription(object):
       '# Enter a description of the change.\n'
       '# This will be displayed on the codereview site.\n'
       '# The first line will also be used as the subject of the review.\n'
-      '#----------------------This line is 76 characters long'
-      '----------------------\n'
+      '#--------------------This line is 72 characters long'
+      '--------------------\n'
     ) + self._description
 
     if '\nBUG=' not in self._description:

tests/git_cl_test.py

@@ -386,8 +386,8 @@ class TestGitCl(TestCase):
           '# Enter a description of the change.\n'
           '# This will be displayed on the codereview site.\n'
           '# The first line will also be used as the subject of the review.\n'
-          '#----------------------This line is 76 characters long'
-          '----------------------\n' +
+          '#--------------------This line is 72 characters long'
+          '--------------------\n' +
           expected_description,
           desc)
       return returned_description