OAuth2 support in depot_tools

third_party/google_api_python_client/README.md

+# About
+This is the Python client library for Google's discovery based APIs. To get started, please see the [full documentation for this library](http://google.github.io/google-api-python-client). Additionally, [dynamically generated documentation](http://api-python-client-doc.appspot.com/) is available for all of the APIs supported by this library.
+
+
+# Installation
+To install, simply use `pip` or `easy_install`:
+
+```bash
+$ pip install --upgrade google-api-python-client
+```
+or
+```bash
+$ easy_install --upgrade google-api-python-client
+```
+
+See the [Developers Guide](https://developers.google.com/api-client-library/python/start/get_started) for more detailed instructions and additional documentation.
+
+# Python Version
+Python 2.6 or 2.7 is required. Python 3.x is not yet supported.
+
+# Third Party Libraries and Dependencies
+The following libraries will be installed when you install the client library:
+* [httplib2](https://github.com/jcgregorio/httplib2)
+* [uri-templates](https://github.com/uri-templates/uritemplate-py)
+
+For development you will also need the following libraries:
+* [WebTest](http://pythonpaste.org/webtest/)
+* [pycrypto](https://pypi.python.org/pypi/pycrypto)
+* [pyopenssl](https://pypi.python.org/pypi/pyOpenSSL)
+
+# Contributing
+Please see the [contributing page](http://google.github.io/google-api-python-client/contributing.html) for more information. In particular, we love pull requests - but please make sure to sign the contributor license agreement.