Check in protobuf java code and generate lite jar.

third_party/protobuf/protobuf_lite_java_descriptor_proto.py

+#!/usr/bin/env python
+# Copyright (c) 2012 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.
+
+"""Generate java DescriptorProto file.
+
+Usage:
+    protobuf_lite_java_descriptor_proto.py {protoc} {java_out} {include} {proto_files}
+
+This is a helper file for the protobuf_lite_java_gen_descriptor_proto action in
+protobuf.gyp.
+
+It performs the following steps:
+1. Recursively deletes old java_out directory.
+2. Creates java_out directory.
+3. Generates Java descriptor proto file using protoc.
+"""
+
+import os
+import shutil
+import subprocess
+import sys
+
+def main(argv):
+  if len(argv) < 4:
+    usage()
+    return 1
+
+  protoc_path, java_out, include = argv[1:4]
+  proto_files = argv[4:]
+
+  # Delete all old sources
+  if os.path.exists(java_out):
+    shutil.rmtree(java_out)
+
+  # Create source directory
+  os.makedirs(java_out)
+
+  # Generate Java files using protoc
+  return subprocess.call(
+      [protoc_path, '--java_out', java_out, '-I' + include]
+      + proto_files)
+
+def usage():
+  print(__doc__);
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))