Convert Android.mk to Android.bp

This CL builds the Widevine drm services and libraries.
Soong makefile conversion for unit and integration
tests will be in a different CL.

This doc may help with the review:
https://docs.google.com/document/d/1lK3X9RFPwbbwewLNlS4TfSMhxIlPuAkHRnGcgwWpChU/edit?usp=sharing

Test: build
Test: Play Movies and Netflix streaming
Test: unit tests
  build_and_run_all_tests.sh
Test: gts
  ANDROID_BUILD_TOP= ./android-gts/tools/gts-tradefed run gts -m GtsMediaTestCases -t com.google.android.media.gts.MediaDrmTest

  atest GtsExoPlayerTestCases:com.google.android.exoplayer.gts.DashTest

Test: vts
  ANDROID_BUILD_TOP= PATH="$PWD/android-vts/tools:$PATH" vts-tradefed run commandAndExit vts --module VtsHalDrmV1_3Target

Bug: 162321744
Change-Id: I50c0fb2e8f28dfe7901587e3d3203542943e23b1

libwvdrmengine/level3/arm64/Android.mk

@@ -1,25 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-LOCAL_CFLAGS := \
-    -DDYNAMIC_ADAPTER \
-    -Wno-unused \
-    -Wno-unused-parameter
-LOCAL_C_INCLUDES := \
-    system/core/base/include \
-    system/core/include \
-    vendor/widevine/libwvdrmengine/cdm/core/include \
-    vendor/widevine/libwvdrmengine/cdm/util/include \
-    vendor/widevine/libwvdrmengine/level3/include \
-    vendor/widevine/libwvdrmengine/oemcrypto/include
-LOCAL_MODULE := libwvlevel3
-LOCAL_MODULE_CLASS := STATIC_LIBRARIES
-LOCAL_SRC_FILES := libl3oemcrypto.cpp \
-    ../src/generate_entropy_android.cpp \
-    ../src/get_unique_id_android.cpp \
-    ../src/level3_file_system_android.cpp \
-    ../src/level3_file_system_android_factory.cpp
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_MODULE_TAGS := optional
-LOCAL_MODULE_OWNER := widevine
-LOCAL_MODULE_TARGET_ARCH := arm64
-include $(BUILD_STATIC_LIBRARY)