Add virtual A/B compression product.
Sets ro.virtual_ab.compression.enabled and includes snapuserd_ramdisk.
A device will do the following to enable virtual a/b compression:
$(call inherit-product, $(SRC_TARGET_DIR)/product/virtual_ab_ota_compression.mk)
Bug: 168257347
Test: build with product included
Change-Id: Ide19576a69629389a7878d5dff3c5706c22527d9
diff --git a/target/product/virtual_ab_ota_compression.mk b/target/product/virtual_ab_ota_compression.mk
new file mode 100644
index 0000000..c4849be
--- /dev/null
+++ b/target/product/virtual_ab_ota_compression.mk
@@ -0,0 +1,21 @@
+#
+# Copyright (C) 2020 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/virtual_ab_ota.mk)
+
+PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.compression.enabled=true
+
+PRODUCT_PACKAGES += snapuserd_ramdisk
diff --git a/target/product/virtual_ab_ota_retrofit_compression.mk b/target/product/virtual_ab_ota_retrofit_compression.mk
new file mode 100644
index 0000000..8059f75
--- /dev/null
+++ b/target/product/virtual_ab_ota_retrofit_compression.mk
@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2020 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/virtual_ab_ota_retrofit.mk)
+
+PRODUCT_VENDOR_PROPERTIES += ro.virtual_ab.compression.enabled=true
+
+PRODUCT_PACKAGES += snapuserd_ramdisk
+