Revert of Remove catapult_base from telemetry.

tools/telemetry/catapult_base/__init__.py

Index: tools/telemetry/catapult_base/__init__.py
diff --git a/tools/telemetry/catapult_base/__init__.py b/tools/telemetry/catapult_base/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..653dd32922af820f43a9c31378fe3dfa3800cb6c
--- /dev/null
+++ b/tools/telemetry/catapult_base/__init__.py
@@ -0,0 +1,23 @@
+# 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.
+
+# All files in this directory should be moved to catapult/base/ after moving
+# to the new repo.
+
+import os
+import sys
+
+from catapult_base import util
+
+def _AddDirToPythonPath(*path_parts):
+  path = os.path.abspath(os.path.join(*path_parts))
+  if os.path.isdir(path) and path not in sys.path:
+    # Some callsite that use telemetry assumes that sys.path[0] is the directory
+    # containing the script, so we add these extra paths to right after it.
+    sys.path.insert(1, path)
+
+_AddDirToPythonPath(os.path.join(util.GetCatapultDir(), 'third_party', 'mock'))
+_AddDirToPythonPath(os.path.join(util.GetCatapultDir(), 'third_party', 'mox3'))
+_AddDirToPythonPath(
+    os.path.join(util.GetCatapultDir(), 'third_party', 'pyfakefs'))