refactor: remove js2asar.py and port logic to JS in more readable / GN-style way (#16718)

* refactor: remove js2asar.py and port logic to JS in more readable / GN-style way

* refactor: further clean up ASAR impl, add new node_action GN template

tools/js2asar.py

@@ -1,51 +0,0 @@
-#!/usr/bin/env python
-
-import errno
-import os
-import shutil
-import subprocess
-import sys
-import tempfile
-
-SOURCE_ROOT = os.path.dirname(os.path.dirname(__file__))
-
-
-def main():
-  archive = sys.argv[1]
-  folder_name = sys.argv[2]
-  source_files = sys.argv[3:]
-
-  output_dir = tempfile.mkdtemp()
-  copy_files(source_files, output_dir, folder_name)
-  call_asar(archive, os.path.join(output_dir, folder_name))
-  shutil.rmtree(output_dir)
-
-
-def copy_files(source_files, output_dir, folder_name):
-  for source_file in source_files:
-    output_path = os.path.join(output_dir, source_file)
-    # Files that aren't in the default_app folder need to be put inside
-    # the temp one we are making so they end up in the ASAR
-    if not os.path.normpath(source_file).startswith(folder_name + os.sep):
-      output_path = os.path.join(output_dir, folder_name, source_file)
-    safe_mkdir(os.path.dirname(output_path))
-    shutil.copy2(source_file, output_path)
-
-
-def call_asar(archive, output_dir):
-  asar = os.path.join(SOURCE_ROOT, 'node_modules', '.bin', 'asar')
-  if sys.platform in ['win32', 'cygwin']:
-    asar += '.cmd'
-  subprocess.check_call([asar, 'pack', output_dir, archive])
-
-
-def safe_mkdir(path):
-  try:
-    os.makedirs(path)
-  except OSError as e:
-    if e.errno != errno.EEXIST:
-      raise
-
-
-if __name__ == '__main__':
-  sys.exit(main())