GN WebView: make system_webview_apk work

android_webview/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/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/config/locales.gni")
 import("//tools/grit/repack.gni")
+import("system_webview_apk_tmpl.gni")
 import("webview_repack_locales.gni")
 
 group("android_webview") {
   deps = [
     ":system_webview_apk",
   ]
 }
 
 jinja_template("system_webview_manifest") {
   input = "apk/java/AndroidManifest.xml"
@@ skipping 439 matching lines @@
     "renderer/aw_render_view_ext.cc",
     "renderer/aw_render_view_ext.h",
     "renderer/print_render_frame_observer.cc",
     "renderer/print_render_frame_observer.h",
   ]
 
   deps = [
     ":generate_aw_resources",
     ":generate_aw_strings",
     ":generate_components_strings",
+    "//android_webview/common:version",
     "//android_webview/native:native",
     "//cc/surfaces",
     "//components/auto_login_parser:auto_login_parser",
     "//components/autofill/content/renderer",
     "//components/crash/content/app",
     "//components/crash/content/browser",
     "//components/cdm/browser",
     "//components/cdm/renderer",
     "//components/data_reduction_proxy/core/browser",
     "//components/devtools_discovery",
@@ skipping 156 matching lines @@
     "values-tl/android_webview_strings.xml",
     "values-tr/android_webview_strings.xml",
     "values-uk/android_webview_strings.xml",
     "values-vi/android_webview_strings.xml",
     "values-zh-rCN/android_webview_strings.xml",
     "values-zh-rTW/android_webview_strings.xml",
     "values/android_webview_strings.xml",
   ]
 }
 
-android_apk("system_webview_apk") {
+system_webview_apk_tmpl("system_webview_apk") {
   android_manifest = get_target_outputs(":system_webview_manifest")
   android_manifest = android_manifest[1]
   android_manifest_dep = ":system_webview_manifest"
-  chromium_code = true
   deps = [
     ":system_webview_resources",
-    ":assets",
-    ":libwebviewchromium",
     "//android_webview/glue",
-    "//base:base_java",
   ]
   apk_name = "SystemWebView"
-  native_libs = [ "$root_build_dir/libwebviewchromium.so" ]
 }