Use aidl interface for Widevine service.

The interface is defined in
hardware/interfaces/drm/aidl(http://go/ag/15329852).

Test: build
  m android.hardware.drm-service.widevine -j128

Test: build_and_run_all_unit_tests.sh
  for hidl tests

Test: atest VtsAidlHalDrmTargetTest

Test:   atest vts_treble_vintf_vendor_test:vts_treble_vintf_vendor_test.DeviceManifest/SingleManifestTest#ManifestAidlHalsServed/0 -- --abi x86_64

Bug: 200055138
Bug: 170964303
Change-Id: I5654d90d8a4b0bae4b4a78e79b27c1cafec36be7

libwvdrmengine/mediacrypto/Android.bp

@@ -64,5 +64,48 @@ cc_library_static {
     cflags: ["-Wthread-safety"],
 
     proprietary: true,
-
+}
+
+// Builds libwvdrmcryptoplugin_aidl
+//
+cc_library_static {
+    name: "libwvdrmcryptoplugin_aidl",
+
+    srcs: ["aidl_src/WVCryptoPlugin.cpp"],
+
+    include_dirs: [
+        "frameworks/av/include",
+        "frameworks/native/include",
+        "vendor/widevine/libwvdrmengine/cdm/core/include",
+        "vendor/widevine/libwvdrmengine/cdm/include",
+        "vendor/widevine/libwvdrmengine/cdm/metrics/include",
+        "vendor/widevine/libwvdrmengine/cdm/util/include",
+        "vendor/widevine/libwvdrmengine/aidl_include",
+        "vendor/widevine/libwvdrmengine/include",
+        "vendor/widevine/libwvdrmengine/mediacrypto/aidl_include",
+        "vendor/widevine/libwvdrmengine/oemcrypto/include",
+    ],
+
+    header_libs: [
+        "libstagefright_headers",
+        "libutils_headers",
+    ],
+
+    static_libs: [
+        "android.hardware.common-V2-ndk",
+        "libaidlcommonsupport",
+        "libcdm_protos",
+    ],
+
+    shared_libs: [
+        "android.hardware.drm-V1-ndk",
+        "libbase",
+        "libcrypto",
+        "libhwbinder",
+        "liblog",
+    ],
+
+    cflags: ["-Wthread-safety"],
+
+    proprietary: true,
 }