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

chrome/telemetry_unittests.isolate

 # 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.
 {
   'includes': [
     '../tools/perf/chrome_telemetry_build/telemetry_chrome_test.isolate',
   ],
   'conditions': [
     ['OS=="mac" or OS=="win"', {
       'variables': {
         'files': [
+          '../tools/perf/run_telemetry_tests',
           # Other dependencies of the tests and their harness.
           '../testing/test_env.py',
           '../testing/xvfb.py',
           '../testing/scripts/common.py',
           '../testing/scripts/run_telemetry_as_googletest.py',
         ],
       }
     }],
     ['OS=="mac"', {
       'variables': {
         'command': [
           '../testing/scripts/run_telemetry_as_googletest.py',
-          '../tools/telemetry/run_tests',
+          '../tools/perf/run_telemetry_tests',
           '-v',
           '--chrome-root',
           '..',
         ],
       },
     }],
     ['OS=="win"', {
       'variables': {
         'command': [
           '../testing/scripts/run_telemetry_as_googletest.py',
-          '../tools/telemetry/run_tests',
+          '../tools/perf/run_telemetry_tests',
           '-v',
           '--chrome-root',
           '..',
           # crbug.com/570955
           # TODO(nednguyen): Remove --jobs=1 once the bug is fixed to speed up
           # the test run.
           '--job=1',
         ],
       },
     }],
   ]
 }