[LSC] Add LOCAL_LICENSE_KINDS to external/libtextclassifier

Added SPDX-license-identifier-Apache-2.0 to:
  coverage/Android.bp
  java/Android.bp
  java/tests/instrumentation/Android.bp
  jni/Android.bp
  native/Android.bp
  notification/Android.bp
  notification/tests/Android.bp

Added SPDX-license-identifier-Apache-2.0 legacy_unencumbered to:
  Android.bp
  abseil-cpp/Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: Ibd0d30dc0908aa996ad45999b08448734c592dfb
diff --git a/java/Android.bp b/java/Android.bp
index 163512e..ca34a66 100644
--- a/java/Android.bp
+++ b/java/Android.bp
@@ -15,6 +15,15 @@
 //
 
 // A standalone TextClassifierService app for testing.
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "external_libtextclassifier_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["external_libtextclassifier_license"],
+}
+
 android_app {
     name: "TextClassifierService",
     static_libs: ["TextClassifierServiceLib"],