Add coverage

tools/telemetry/third_party/coverage/README.rst

Index: tools/telemetry/third_party/coverage/README.rst
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+.. Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+.. For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+===========
+Coverage.py
+===========
+
+Code coverage testing for Python.
+
+|  |license| |versions| |status| |docs|
+|  |ci-status| |win-ci-status| |codecov|
+|  |kit| |format| |downloads|
+
+Coverage.py measures code coverage, typically during test execution. It uses
+the code analysis tools and tracing hooks provided in the Python standard
+library to determine which lines are executable, and which have been executed.
+
+Coverage.py runs on CPython 2.6, 2.7, 3.3, 3.4 or 3.5, PyPy 2.6, and PyPy3 2.4.
+
+Documentation is on `Read the Docs <http://coverage.readthedocs.org>`_.
+Code repository and issue tracker are on `Bitbucket <http://bitbucket.org/ned/coveragepy>`_,
+with a mirrored repository on `GitHub <https://github.com/nedbat/coveragepy>`_.
+
+**New in 4.0:** ``--concurrency``, plugins for non-Python files, setup.cfg
+support, --skip-covered, HTML filtering, and more than 50 issues closed.
+
+
+Quick Start
+-----------
+
+See the `quick start <http://coverage.readthedocs.org/#quick-start>`_
+section of the docs.
+
+
+License
+-------
+
+Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0.
+For details, see https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt.
+
+
+.. |ci-status| image:: https://travis-ci.org/nedbat/coveragepy.svg?branch=master
+    :target: https://travis-ci.org/nedbat/coveragepy
+    :alt: Build status
+.. |win-ci-status| image:: https://ci.appveyor.com/api/projects/status/bitbucket/ned/coveragepy?svg=true
+    :target: https://ci.appveyor.com/project/nedbat/coveragepy
+    :alt: Windows build status
+.. |docs| image:: https://readthedocs.org/projects/coverage/badge/?version=latest&style=flat
+    :target: http://coverage.readthedocs.org
+    :alt: Documentation
+.. |reqs| image:: https://requires.io/github/nedbat/coveragepy/requirements.svg?branch=master
+    :target: https://requires.io/github/nedbat/coveragepy/requirements/?branch=master
+    :alt: Requirements status
+.. |kit| image:: https://badge.fury.io/py/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: PyPI status
+.. |format| image:: https://img.shields.io/pypi/format/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: Kit format
+.. |downloads| image:: https://img.shields.io/pypi/dd/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: Daily PyPI downloads
+.. |versions| image:: https://img.shields.io/pypi/pyversions/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: Python versions supported
+.. |status| image:: https://img.shields.io/pypi/status/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: Package stability
+.. |license| image:: https://img.shields.io/pypi/l/coverage.svg
+    :target: https://pypi.python.org/pypi/coverage
+    :alt: License
+.. |codecov| image:: http://codecov.io/github/nedbat/coveragepy/coverage.svg?branch=master
+    :target: http://codecov.io/github/nedbat/coveragepy?branch=master
+    :alt: Coverage!