1 files changed, 89 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/android/gyp/unused_resources.py b/third_party/libwebrtc/build/android/gyp/unused_resources.py
new file mode 100755
index 0000000000..cdaf4cf5b1
--- /dev/null
+++ b/third_party/libwebrtc/build/android/gyp/unused_resources.py
@@ -0,0 +1,89 @@
+#!/usr/bin/env python3
+# encoding: utf-8
+# Copyright (c) 2021 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 argparse
+import os
+import sys
+
+sys.path.insert(
+    0, os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir)))
+from util import build_utils
+from util import resource_utils
+
+
+def main(args):
+  parser = argparse.ArgumentParser()
+
+  build_utils.AddDepfileOption(parser)
+  parser.add_argument('--script',
+                      required=True,
+                      help='Path to the unused resources detector script.')
+  parser.add_argument(
+      '--dependencies-res-zips',
+      required=True,
+      action='append',
+      help='Resources zip archives to investigate for unused resources.')
+  parser.add_argument('--dexes',
+                      action='append',
+                      required=True,
+                      help='Path to dex file, or zip with dex files.')
+  parser.add_argument(
+      '--proguard-mapping',
+      help='Path to proguard mapping file for the optimized dex.')
+  parser.add_argument('--r-text', required=True, help='Path to R.txt')
+  parser.add_argument('--android-manifests',
+                      action='append',
+                      required=True,
+                      help='Path to AndroidManifest')
+  parser.add_argument('--output-config',
+                      required=True,
+                      help='Path to output the aapt2 config to.')
+  args = build_utils.ExpandFileArgs(args)
+  options = parser.parse_args(args)
+  options.dependencies_res_zips = (build_utils.ParseGnList(
+      options.dependencies_res_zips))
+
+  # in case of no resources, short circuit early.
+  if not options.dependencies_res_zips:
+    build_utils.Touch(options.output_config)
+    return
+
+  with build_utils.TempDir() as temp_dir:
+    dep_subdirs = []
+    for dependency_res_zip in options.dependencies_res_zips:
+      dep_subdirs += resource_utils.ExtractDeps([dependency_res_zip], temp_dir)
+
+    cmd = [
+        options.script,
+        '--rtxts',
+        options.r_text,
+        '--manifests',
+        ':'.join(options.android_manifests),
+        '--resourceDirs',
+        ':'.join(dep_subdirs),
+        '--dexes',
+        ':'.join(options.dexes),
+        '--outputConfig',
+        options.output_config,
+    ]
+    if options.proguard_mapping:
+      cmd += [
+          '--mapping',
+          options.proguard_mapping,
+      ]
+    build_utils.CheckOutput(cmd)
+
+  if options.depfile:
+    depfile_deps = (options.dependencies_res_zips + options.android_manifests +
+                    options.dexes) + [options.r_text]
+    if options.proguard_mapping:
+      depfile_deps.append(options.proguard_mapping)
+    build_utils.WriteDepfile(options.depfile, options.output_config,
+                             depfile_deps)
+
+
+if __name__ == '__main__':
+  main(sys.argv[1:])