[Android] Enable WebAPK to have multiple intent filters

chrome/android/webapk/shell_apk/manifest_processor.gni

Index: chrome/android/webapk/shell_apk/manifest_processor.gni
diff --git a/chrome/android/webapk/shell_apk/manifest_processor.gni b/chrome/android/webapk/shell_apk/manifest_processor.gni
index 994c46931bae327cc52674d4b68545116f294b37..ae922d9e77fdd0aeeffeba984dfea41b577f00ea 100644
--- a/chrome/android/webapk/shell_apk/manifest_processor.gni
+++ b/chrome/android/webapk/shell_apk/manifest_processor.gni
@@ -18,6 +18,7 @@ template("manifest_processor_template") {
                              "deps",
                            ])
     sources = [
+      invoker.config_file,
       invoker.input,
     ]
     script = "//chrome/android/webapk/shell_apk/manifest_processor.py"
@@ -29,12 +30,14 @@ template("manifest_processor_template") {
     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}" ]
     }
   }
 }