Simplify mojo_shell since it's now only used for Mandoline.

mojo/services/html_viewer/view_url.py

-#!/usr/bin/env python
-# Copyright 2015 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 subprocess
-import sys
-
-root_path = os.path.realpath(
-    os.path.join(
-        os.path.dirname(
-            os.path.realpath(__file__)),
-        os.pardir,
-        os.pardir,
-        os.pardir))
-
-def _BuildShellCommand(args):
-  sdk_version = subprocess.check_output(["cat",
-      "third_party/mojo/src/mojo/public/VERSION"], cwd=root_path)
-  build_dir = os.path.join(root_path, args.build_dir)
-
-  shell_command = [os.path.join(build_dir, "mojo_shell")]
-
-  options = []
-  options.append(
-      "--origin=https://storage.googleapis.com/mojo/services/linux-x64/%s" %
-           sdk_version)
-  options.append("--url-mappings=mojo:html_viewer=file://%s/html_viewer.mojo" %
-                 build_dir)
-  options.append('--args-for=mojo:kiosk_wm %s' % args.url)
-
-  app_to_run = "mojo:kiosk_wm"
-
-  return shell_command + options + [app_to_run]
-
-def main():
-  parser = argparse.ArgumentParser(
-      description="View a URL with HTMLViewer in the Kiosk window manager. "
-                  "You must have built //mojo/services/html_viewer and "
-                  "//mojo/services/network first. Note that this will "
-                  "currently often fail spectacularly due to lack of binary "
-                  "stability in Mojo.")
-  parser.add_argument(
-      "--build-dir",
-      help="Path to the dir containing the linux-x64 binaries relative to the "
-           "repo root (default: %(default)s)",
-      default="out/Release")
-  parser.add_argument("url",
-                      help="The URL to be viewed")
-
-  args = parser.parse_args()
-  return subprocess.call(_BuildShellCommand(args))
-
-if __name__ == '__main__':
-  sys.exit(main())