Revert of Remove catapult_base from telemetry.

tools/telemetry/catapult_base/bin/run_tests

+#!/usr/bin/env python
+# Copyright (c) 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.
+
+import os
+import sys
+
+_CATAPULT_BASE_PATH = os.path.abspath(
+    os.path.join(os.path.dirname(__file__), '..'))
+_TELEMETRY_BASE_PATH = os.path.abspath(os.path.join(_CATAPULT_BASE_PATH, '..'))
+_CATAPULT_PATH = os.path.abspath(os.path.join(
+    _CATAPULT_BASE_PATH, '..', '..', '..', 'third_party', 'catapult'))
+
+
+def _RunTestsOrDie(top_level_dir):
+  exit_code = run_with_typ.Run(top_level_dir, path=[_TELEMETRY_BASE_PATH])
+  if exit_code:
+    sys.exit(exit_code)
+
+
+def _AddToPathIfNeeded(path):
+  if path not in sys.path:
+    sys.path.insert(0, path)
+
+
+if __name__ == '__main__':
+  _AddToPathIfNeeded(_CATAPULT_PATH)
+
+  from hooks import install
+  if '--no-install-hooks' in sys.argv:
+    sys.argv.remove('--no-install-hooks')
+  else:
+    install.InstallHooks()
+
+  from catapult_build import run_with_typ
+  _RunTestsOrDie(_CATAPULT_BASE_PATH)
+  sys.exit(0)