Bug 1790816 - Reformat gfx/ with isort. r=jgilbert DONTBUILD

# ignore-this-changeset

Differential Revision: https://phabricator.services.mozilla.com/D162641

gfx/gl/GLConsts.py

@@ -22,12 +22,12 @@ Step 4:
 """
 
 # includes
-from typing import List  # mypy!
-
 import pathlib
 import sys
 import xml.etree.ElementTree
 
+from typing import List  # mypy!
+
 # -
 
 (_, XML_DIR_STR) = sys.argv

gfx/layers/d3d11/genshaders.py

@@ -2,6 +2,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 from __future__ import absolute_import
+
 import argparse
 import codecs
 import locale
@@ -10,8 +11,9 @@ import re
 import subprocess
 import sys
 import tempfile
-import yaml
+
 import buildconfig
+import yaml
 
 
 def shell_main():

gfx/thebes/gencjkcisvs.py

@@ -3,6 +3,7 @@
 # You can obtain one at http://mozilla.org/MPL/2.0/.
 
 from __future__ import absolute_import
+
 import os.path
 import re
 import sys