Add coverage

tools/telemetry/third_party/coverage/coverage/__init__.py

Index: tools/telemetry/third_party/coverage/coverage/__init__.py
diff --git a/tools/telemetry/third_party/coverage/coverage/__init__.py b/tools/telemetry/third_party/coverage/coverage/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..d132e4a7536c739c46a93fdae8809002164a49c5
--- /dev/null
+++ b/tools/telemetry/third_party/coverage/coverage/__init__.py
@@ -0,0 +1,34 @@
+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+"""Code coverage measurement for Python.
+
+Ned Batchelder
+http://nedbatchelder.com/code/coverage
+
+"""
+
+from coverage.version import __version__, __url__, version_info
+
+from coverage.control import Coverage, process_startup
+from coverage.data import CoverageData
+from coverage.misc import CoverageException
+from coverage.plugin import CoveragePlugin, FileTracer, FileReporter
+
+# Backward compatibility.
+coverage = Coverage
+
+# On Windows, we encode and decode deep enough that something goes wrong and
+# the encodings.utf_8 module is loaded and then unloaded, I don't know why.
+# Adding a reference here prevents it from being unloaded.  Yuk.
+import encodings.utf_8
+
+# Because of the "from coverage.control import fooey" lines at the top of the
+# file, there's an entry for coverage.coverage in sys.modules, mapped to None.
+# This makes some inspection tools (like pydoc) unable to find the class
+# coverage.coverage.  So remove that entry.
+import sys
+try:
+    del sys.modules['coverage.coverage']
+except KeyError:
+    pass