[Telemetry] Update telemetry_unittests to use tools/perf/run_telemetry_tests

tools/perf/run_telemetry_tests

Index: tools/perf/run_telemetry_tests
diff --git a/tools/perf/run_tests b/tools/perf/run_telemetry_tests
similarity index 69%
copy from tools/perf/run_tests
copy to tools/perf/run_telemetry_tests
index 32a2b840df6d4f2adb99f715ce5ffd1ecb4df2f3..9dabfa4223d8bf9d7bb1b329d72b5c7a6814449f 100755
--- a/tools/perf/run_tests
+++ b/tools/perf/run_telemetry_tests
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2016 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.
 
@@ -13,13 +13,15 @@ import subprocess
 import sys
 
 from chrome_telemetry_build import chromium_config
-from core import path_util
 
-sys.path.append(path_util.GetTelemetryDir())
+
+sys.path.append(chromium_config.GetTelemetryDir())
 from telemetry.testing import unittest_runner
 
+
 def main():
-  project_config = chromium_config.ChromiumConfig()
+  project_config = chromium_config.ChromiumConfig(
+      top_level_dir=chromium_config.GetTelemetryDir())
   return unittest_runner.Run(project_config)
 
 if __name__ == '__main__':