Fix java handler.

services/android/add_manifest_entry.py

Index: services/android/add_manifest_entry.py
diff --git a/services/android/add_manifest_entry.py b/services/android/add_manifest_entry.py
new file mode 100755
index 0000000000000000000000000000000000000000..a00052e90aa1fe3c86b079bf58a2d42e363899cc
--- /dev/null
+++ b/services/android/add_manifest_entry.py
@@ -0,0 +1,54 @@
+#!/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.
+
+"""Add an entry into the manifest file of a jar file."""
+
+import optparse
+import os
+import os.path
+import sys
+import shutil
+import tempfile
+import zipfile
+
+def AddKey(input_jar, output, key, value):
+  working_dir = tempfile.mkdtemp()
+  extracted_dir = os.path.join(working_dir, 'extracted')
+  try:
+    with zipfile.ZipFile(input_jar) as zf:
+      zf.extractall(extracted_dir)
+    manifest_file = os.path.join(extracted_dir, 'META-INF', 'MANIFEST.MF')
+    manifest_content = ''
+    if os.path.isfile(manifest_file):
+      with open(manifest_file, 'r') as f:
+        manifest_content = f.read().strip()
+        if len(manifest_content):
+          manifest_content += '\n'
+      os.unlink(manifest_file)
+    manifest_content += '%s: %s\n' % (key, value)
+    with open(manifest_file, 'w') as f:
+      f.write(manifest_content)
+    shutil.make_archive(os.path.join(working_dir, 'output'), 'zip',
+                        extracted_dir, '.')
+    shutil.move(os.path.join(working_dir, 'output.zip'), output)
+  finally:
+    shutil.rmtree(working_dir)
+
+
+def main():
+  parser = optparse.OptionParser()
+
+  parser.add_option('--input', help='Name of the input jar.')
+  parser.add_option('--output', help='Name of the output jar.')
+  parser.add_option('--key', help='Name of the key to add to the manifest.')
+  parser.add_option('--value', help='Name of the value to add to the manifest.')
+
+  options, _ = parser.parse_args()
+  AddKey(options.input, options.output, options.key, options.value)
+
+
+if __name__ == '__main__':
+  sys.exit(main())