Upstream WebAPK notification related code

chrome/android/webapk/shell_apk/BUILD.gn

 # Copyright 2015 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.
 
 import("//build/config/android/rules.gni")
 
 declare_args() {
   # The origin URL of the WebAPK. Used to generate a unique package name for
   # WebAPK. Example: "foo.com"
   webapk_manifest_package_origin = "template"
@@ skipping 37 matching lines @@
   resource_dirs = [ "res" ]
   custom_package = "org.chromium.webapk.shell_apk"
 }
 
 # Template for WebAPK. When a WebAPK is generated:
 # - Android manifest is customized to the website.
 # - App icon is extracted from the website and added to the APK's resources.
 android_apk("webapk") {
   android_manifest = shell_apk_manifest
   apk_name = "WebApk.$webapk_manifest_package_origin"
-  java_files = [ "src/org/chromium/webapk/shell_apk/MainActivity.java" ]
+  java_files = [
+    "src/org/chromium/webapk/shell_apk/MainActivity.java",
+    "src/org/chromium/webapk/shell_apk/WebApkServiceFactory.java",
+  ]
   deps = [
     ":shell_apk_manifest",
     ":shell_apk_resources",
     "//chrome/android/webapk/libs/common",
+    "//chrome/android/webapk/libs/runtime_library",
   ]
 }