Include TypeScript .ts files in DEFAULT_FILES_TO_CHECK.

These were previously erroneously skipped resulting in missing
violations.

Fixed: 1322170
Change-Id: I62d27f60bc1761f1f8809c6a7db2ca5f4e05e120
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3626289Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Auto-Submit: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>

presubmit_support.py

@@ -559,7 +559,8 @@ class InputApi(object):
       r'.+\.c$', r'.+\.cc$', r'.+\.cpp$', r'.+\.h$', r'.+\.m$', r'.+\.mm$',
       r'.+\.inl$', r'.+\.asm$', r'.+\.hxx$', r'.+\.hpp$', r'.+\.s$', r'.+\.S$',
       # Scripts
-      r'.+\.js$', r'.+\.py$', r'.+\.sh$', r'.+\.rb$', r'.+\.pl$', r'.+\.pm$',
+      r'.+\.js$', r'.+\.ts$', r'.+\.py$', r'.+\.sh$', r'.+\.rb$', r'.+\.pl$',
+      r'.+\.pm$',
       # Other
       r'.+\.java$', r'.+\.mk$', r'.+\.am$', r'.+\.css$', r'.+\.mojom$',
       r'.+\.fidl$'

tests/presubmit_unittest.py

@@ -1409,7 +1409,7 @@ class InputApiUnittest(PresubmitTestsBase):
   def testDefaultOverrides(self):
     input_api = presubmit.InputApi(
         self.fake_change, './PRESUBMIT.py', False, None, False)
-    self.assertEqual(len(input_api.DEFAULT_FILES_TO_CHECK), 24)
+    self.assertEqual(len(input_api.DEFAULT_FILES_TO_CHECK), 25)
     self.assertEqual(len(input_api.DEFAULT_FILES_TO_SKIP), 12)
 
     input_api.DEFAULT_FILES_TO_CHECK = (r'.+\.c$',)