Revert "Convert libwvdrmengine to soong."

This change introduced b/38487636 "Distorted video observed when
playing purchased/rented movie in Google play movies & TV app."

Before resubmitting an updated variant of the original CL, please
test playback with Play Movies and the GTS media tests. 

This reverts commit 33f9979b2b.

Change-Id: I4ec2e6fe81323e91e4b62288755c967999e81041

libwvdrmengine/vts/vendor_module/Android.mk

@@ -0,0 +1,40 @@
+# ----------------------------------------------------------------
+# Builds libvtswidevine.so
+#
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_C_INCLUDES := \
+    hardware/interfaces/drm/1.0/vts/functional \
+    vendor/widevine/libwvdrmengine/cdm/include \
+    vendor/widevine/libwvdrmengine/cdm/core/include \
+    vendor/widevine/libwvdrmengine/cdm/core/test \
+    system/libhidl/base/include \
+    system/core/base/include \
+    system/libvintf/include \
+
+LOCAL_SRC_FILES := \
+    factory.cpp \
+    vts_module.cpp \
+    ../../cdm/core/test/url_request.cpp \
+    ../../cdm/core/test/license_request.cpp \
+    ../../cdm/core/test/http_socket.cpp \
+
+LOCAL_STATIC_LIBRARIES := \
+    libgtest \
+    libcdm \
+    libcdm_utils \
+    libcrypto_static
+
+LOCAL_SHARED_LIBRARIES := \
+    libcutils \
+    liblog \
+    libssl \
+    libutils \
+
+LOCAL_MODULE := libvtswidevine
+LOCAL_MODULE_RELATIVE_PATH := drm-vts-test-libs
+LOCAL_MODULE_TAGS := optional
+
+
+include $(BUILD_SHARED_LIBRARY)