GN: Get //chrome/* mostly working on android

components/dom_distiller/core/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # GYP version: components/dom_distiller.gypi:dom_distiller_core
 static_library("core") {
   sources = [
     "../android/component_jni_registrar.cc",
     "../android/component_jni_registrar.h",
     "article_distillation_update.cc",
@@ skipping 48 matching lines @@
     "//ui/base",
     "//url",
   ]
 
   forward_dependent_configs_from = [
     "//components/dom_distiller/core/proto",
     "//third_party/dom_distiller_js:proto",
   ]
 
   if (is_android) {
-    #deps += [ ":dom_distiller_core_jni_headers" ]  TODO(GYP)
+    deps += [ ":jni_headers" ]
   }
 }
 
 # GYP version: components/dom_distiller.gypi:dom_distiller_test_support
 static_library("test_support") {
   testonly = true
   sources = [
     "dom_distiller_test_util.cc",
     "dom_distiller_test_util.h",
     "fake_distiller.cc",
@@ skipping 27 matching lines @@
     "viewer_unittest.cc",
   ]
 
   deps = [
     ":core",
     ":test_support",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }
+
+if (is_android) {
+  import("//build/config/android/rules.gni")
+
+  generate_jni("jni_headers") {
+    sources = [
+      "../android/java/src/org/chromium/components/dom_distiller/core/DistilledPagePrefs.java",
+      "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerService.java",
+      "../android/java/src/org/chromium/components/dom_distiller/core/DomDistillerUrlUtils.java",
+    ]
+    jni_package = "dom_distiller_core"
+  }
+}