Add Mainline Test Suite (MTS) to build.

Test: m mts

Bug: 126277867
Bug: 123411735
Change-Id: Iba6bf89bd4457ed0f5c1eb3351bf5ffd6720441d
diff --git a/core/main.mk b/core/main.mk
index df5c13c..e9b1bca 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -102,6 +102,8 @@
 -include test/sts/tools/sts-tradefed/build/config.mk
 # CTS-Instant-specific config
 -include test/suite_harness/tools/cts-instant-tradefed/build/config.mk
+# MTS-specific config.
+-include test/mts/tools/build/config.mk
 
 # Clean rules
 .PHONY: clean-dex-files
diff --git a/core/tasks/mts.mk b/core/tasks/mts.mk
new file mode 100644
index 0000000..e800505
--- /dev/null
+++ b/core/tasks/mts.mk
@@ -0,0 +1,25 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# 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.
+
+ifneq ($(wildcard test/mts/README.md),)
+test_suite_name := mts
+test_suite_tradefed := mts-tradefed
+test_suite_readme := test/mts/README.md
+
+include $(BUILD_SYSTEM)/tasks/tools/compatibility.mk
+
+.PHONY: mts
+mts: $(compatibility_zip)
+$(call dist-for-goals, mts, $(compatibility_zip))
+endif