old_contents: #!/usr/bin/python2
  #
  # Copyright 2016 The ANGLE Project Authors. All rights reserved.
  # Use of this source code is governed by a BSD-style license that can be
  # found in the LICENSE file.
  #
  # update_canary_angle.py:
  #   Helper script that copies Windows ANGLE DLLs into the Canary
  #   application directory. Much faster than compiling Chrome from
  #   source. The script checks for the most recent DLLs in a set of
  #   search paths, and copies that into the most recent Canary
  #   binary folder. Only works on Windows.
  
  import sys, os, shutil
  
  # Set of search paths.
  source_paths = [
      os.path.join('..', 'out', 'Debug'),
      os.path.join('..', 'out', 'Debug_x64'),
      os.path.join('..', 'out', 'Release'),
      os.path.join('..', 'out', 'Release_x64'),
  ]
  
  script_dir = os.path.dirname(sys.argv[0])
  
  # Default Canary installation path.
  chrome_folder = os.path.join(os.environ['LOCALAPPDATA'], 'Google', 'Chrome SxS', 'Application')
  
  # Find the most recent ANGLE DLLs
  binary_name = 'libGLESv2.dll'
  newest_folder = None
  newest_mtime = None
  for path in source_paths:
      binary_path = os.path.join(script_dir, path, binary_name)
      if os.path.exists(binary_path):
          binary_mtime = os.path.getmtime(binary_path)
          if (newest_folder is None) or (binary_mtime > newest_mtime):
              newest_folder = os.path.join(script_dir, path)
              newest_mtime = binary_mtime
  
  if newest_folder is None:
      sys.exit("Could not find ANGLE DLLs!")
  
  source_folder = newest_folder
  
  # Is a folder a chrome binary directory?
  def is_chrome_bin(str):
      chrome_file = os.path.join(chrome_folder, str)
      return os.path.isdir(chrome_file) and all([char.isdigit() or char == '.' for char in str])
  
  sorted_chrome_bins = sorted([folder for folder in os.listdir(chrome_folder) if is_chrome_bin(folder)], reverse=True)
  
  dest_folder = os.path.join(chrome_folder, sorted_chrome_bins[0])
  
  print('Copying DLLs from ' + source_folder + ' to ' + dest_folder + '.')
  
  for dll in ['libGLESv2.dll', 'libEGL.dll']:
      src = os.path.join(source_folder, dll)
      if os.path.exists(src):
          # Make a backup of the original unmodified DLLs if they are present.
          backup = os.path.join(source_folder, dll + '.backup')
          if not os.path.exists(backup):
              shutil.copyfile(src, backup)
          shutil.copyfile(src, os.path.join(dest_folder, dll))
  
new_contents: #!/usr/bin/python2
  #
  # Copyright 2016 The ANGLE Project Authors. All rights reserved.
  # Use of this source code is governed by a BSD-style license that can be
  # found in the LICENSE file.
  #
  # update_canary_angle.py:
  #   Helper script that copies Windows ANGLE DLLs into the Canary
  #   application directory. Much faster than compiling Chrome from
  #   source. The script checks for the most recent DLLs in a set of
  #   search paths, and copies that into the most recent Canary
  #   binary folder. Only works on Windows.
  
  import glob, sys, os, shutil
  
  # Set of search paths.
  script_dir = os.path.dirname(sys.argv[0])
  os.chdir(os.path.join(script_dir, ".."))
  
  source_paths = glob.glob('out/*')
  
  # Default Canary installation path.
  chrome_folder = os.path.join(os.environ['LOCALAPPDATA'], 'Google', 'Chrome SxS', 'Application')
  
  # Find the most recent ANGLE DLLs
  binary_name = 'libGLESv2.dll'
  newest_folder = None
  newest_mtime = None
  for path in source_paths:
      binary_path = os.path.join(path, binary_name)
      if os.path.exists(binary_path):
          binary_mtime = os.path.getmtime(binary_path)
          if (newest_folder is None) or (binary_mtime > newest_mtime):
              newest_folder = path
              newest_mtime = binary_mtime
  
  if newest_folder is None:
      sys.exit("Could not find ANGLE DLLs!")
  
  source_folder = newest_folder
  
  # Is a folder a chrome binary directory?
  def is_chrome_bin(str):
      chrome_file = os.path.join(chrome_folder, str)
      return os.path.isdir(chrome_file) and all([char.isdigit() or char == '.' for char in str])
  
  sorted_chrome_bins = sorted([folder for folder in os.listdir(chrome_folder) if is_chrome_bin(folder)], reverse=True)
  
  dest_folder = os.path.join(chrome_folder, sorted_chrome_bins[0])
  
  print('Copying DLLs from ' + source_folder + ' to ' + dest_folder + '.')
  
  for dll in ['libGLESv2.dll', 'libEGL.dll']:
      src = os.path.join(source_folder, dll)
      if os.path.exists(src):
          # Make a backup of the original unmodified DLLs if they are present.
          backup = os.path.join(source_folder, dll + '.backup')
          if not os.path.exists(backup):
              shutil.copyfile(src, backup)
          shutil.copyfile(src, os.path.join(dest_folder, dll))
  
subject: Update update_canary_angle script.