[Android] Enable WebAPK to have multiple intent filters

chrome/android/webapk/shell_apk/manifest_processor.gni

 # Copyright 2017 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")
 
 template("manifest_processor_template") {
   set_sources_assignment_filter([])
   forward_variables_from(invoker, [ "testonly" ])
 
   assert(defined(invoker.input))
   assert(defined(invoker.output))
 
   action(target_name) {
     forward_variables_from(invoker,
                            [
                              "visibility",
                              "deps",
                            ])
     sources = [
+      invoker.config_file,
       invoker.input,
     ]
     script = "//chrome/android/webapk/shell_apk/manifest_processor.py"
 
     outputs = [
       invoker.output,
     ]
 
     args = [
       "--template",
       rebase_path(invoker.input, root_build_dir),
+      "--config_file",
+      rebase_path(invoker.config_file, root_build_dir),
       "--output",
       rebase_path(invoker.output, root_build_dir),
     ]
-    if (defined(invoker.variables)) {
-      variables = invoker.variables
-      args += [ "--variables=${variables}" ]
+    if (defined(invoker.extra_variables)) {
+      extra_variables = invoker.extra_variables
+      args += [ "--extra_variables=${extra_variables}" ]
     }
   }
 }