V18.4.0 CAS plugin

Note that this version does not have Widevine Provisioning 4.0 support.
It is only suitable for device upgrades. A new patch with provisioning
4.0 support will be made later.

tests/src/wv_cas_test_main.cpp

@@ -0,0 +1,20 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+
+#include <gtest/gtest.h>
+
+#include <iostream>
+
+#include "OEMCryptoCENC.h"
+#include "log.h"
+
+namespace wvutil {
+extern LogPriority g_cutoff;
+}  // namespace wvutil
+
+int main(int argc, char** argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  wvutil::g_cutoff = wvutil::CDM_LOG_INFO;
+  return RUN_ALL_TESTS();
+}