Convert core/tests/featureflagtests/Android.mk file to Android.bp

Cherrypick of https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/6924943
See build/soong/README.md for more information.

Bug: 122332340
Test: treehugger
Change-Id: If3f574bc15dedcd7880be605667297d257175c8d
Merged-In: If3f574bc15dedcd7880be605667297d257175c8d

core/tests/featureflagtests/Android.bp

@@ -0,0 +1,19 @@
+android_test {
+    name: "FrameworksCoreFeatureFlagTests",
+    // We only want this apk build for tests.
+    // Include all test java files.
+    srcs: ["src/**/*.java"],
+    dxflags: ["--core-library"],
+    static_libs: [
+        "android-common",
+        "frameworks-core-util-lib",
+        "android-support-test",
+    ],
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+    ],
+    platform_apis: true,
+    certificate: "platform",
+    test_suites: ["device-tests"],
+}

core/tests/featureflagtests/Android.mk

@@ -1,20 +0,0 @@
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-# We only want this apk build for tests.
-LOCAL_MODULE_TAGS := tests
-
-# Include all test java files.
-LOCAL_SRC_FILES := \
-    $(call all-java-files-under, src)
-
-LOCAL_DX_FLAGS := --core-library
-LOCAL_STATIC_JAVA_LIBRARIES := android-common frameworks-core-util-lib android-support-test
-LOCAL_JAVA_LIBRARIES := android.test.runner android.test.base
-LOCAL_PACKAGE_NAME := FrameworksCoreFeatureFlagTests
-LOCAL_PRIVATE_PLATFORM_APIS := true
-
-LOCAL_CERTIFICATE := platform
-LOCAL_COMPATIBILITY_SUITE := device-tests
-
-include $(BUILD_PACKAGE)