Port remaining android buildbot code into python

build/android/buildbot/env_to_json.py

Index: build/android/buildbot/env_to_json.py
diff --git a/build/android/buildbot/env_to_json.py b/build/android/buildbot/env_to_json.py
new file mode 100755
index 0000000000000000000000000000000000000000..ceeb9f69ec218c5108768c4df00abdec648b0fc3
--- /dev/null
+++ b/build/android/buildbot/env_to_json.py
@@ -0,0 +1,11 @@
+#!/usr/bin/python
+# Copyright (c) 2013 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.
+
+# Encode current environment into json.
+
+import json
+import os
+
+print json.dumps(dict(os.environ))