def fetch_spec(props):
    url = 'https://chromium.googlesource.com/devtools/devtools-frontend.git'
    solution = {
        'name'        : 'devtools-frontend',
        'url'         : url,
        'deps_file'   : 'DEPS',
        'managed'     : False,
        'custom_deps' : {},
    }
    spec = {
      'solutions': [solution],
      'with_branch_heads': True,
    }
    return {
      'type': 'gclient_git',
      'gclient_git_spec': spec,
    }