Widevine MediaCas client code that works with Android R

protos/Android.bp

@@ -0,0 +1,21 @@
+// -----------------------------------------------------------------------------
+// Builds libcas_protos.a
+// Generates *.a, *.pb.h and *.pb.cc for *.proto files.
+//
+
+cc_library_static {
+
+  name: "libcas_protos",
+
+  proprietary: true,
+
+  srcs: [
+    "ca_descriptor.proto",
+    "device_files.proto",
+    "license_protocol.proto",
+  ],
+
+  proto: {
+    export_proto_headers: true,
+  },
+}