Add go tests to presubmit

Change-Id: I2d56a463cecf0b1bcb96c51ae134c6fa07d87b21
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100560
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>

tools/PRESUBMIT.py

@@ -0,0 +1,29 @@
+# Copyright 2022 The Dawn & Tint Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+
+USE_PYTHON3 = True
+
+
+def _DoCommonChecks(input_api, output_api):
+    sys.path += [input_api.change.RepositoryRoot()]
+
+    from go_presubmit_support import RunGoTests
+
+    return RunGoTests(input_api, output_api)
+
+
+CheckChangeOnUpload = _DoCommonChecks
+CheckChangeOnCommit = _DoCommonChecks