Move AppRestriction to Policy code out of //chrome

components/policy/android/BUILD.gn

Index: components/policy/android/BUILD.gn
diff --git a/components/policy/android/BUILD.gn b/components/policy/android/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..d344fe99f4f583c968eb34e88e814866cf16c55b
--- /dev/null
+++ b/components/policy/android/BUILD.gn
@@ -0,0 +1,18 @@
+import("//build/config/android/rules.gni")
+
+_jni_sources = [ "java/src/org/chromium/policy/AppRestrictionsImporter.java" ]
+
+# GYP: //components/components.gyp:policy_jni_headers
+generate_jni("jni_headers") {
+  visibility = [ "//components/policy/*" ]
+  sources = _jni_sources
+  jni_package = "policy"
+}
+
+# GYP: //components/components.gyp:policy_java
+android_library("policy_java") {
+  deps = [
+    "//base:base_java",
+  ]
+  java_files = _jni_sources
+}