Switch from device_brands to device_brand_list

BUG=chromium:1112458
TEST=manually regenerate.sh

Change-Id: I163f06680c6cdef0fefea229489ca28a81b07cbc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/config/+/2335383
Commit-Queue: Sean McAllister <smcallis@google.com>
Tested-by: Sean McAllister <smcallis@google.com>
Reviewed-by: C Shapiro <shapiroc@chromium.org>
Reviewed-by: David Burger <dburger@chromium.org>
Auto-Submit: Sean McAllister <smcallis@google.com>
diff --git a/payload_utils/checker/io_utils_test.py b/payload_utils/checker/io_utils_test.py
index 2dce17f..e2bed4c 100644
--- a/payload_utils/checker/io_utils_test.py
+++ b/payload_utils/checker/io_utils_test.py
@@ -21,8 +21,7 @@
   """Tests for io_utils."""
 
   def setUp(self):
-    self.config = ConfigBundle(
-        program_list=[Program(name='TestProgram1')])
+    self.config = ConfigBundle(program_list=[Program(name='TestProgram1')])
     repo_path = tempfile.mkdtemp()
 
     os.mkdir(os.path.join(repo_path, 'generated'))