[Telemetry] Update all clients to use chromium_config.GetTelemetryDir()

components/proximity_auth/e2e_test/cros.py

 # 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.
 
 import logging
 import os
 import subprocess
 import sys
 import time
 
 # Add the telemetry directory to Python's search paths.
 current_directory = os.path.dirname(os.path.realpath(__file__))
-telemetry_dir = os.path.realpath(
-    os.path.join(current_directory, '..', '..', '..', 'tools', 'telemetry'))
+perf_dir = os.path.realpath(
+    os.path.join(current_directory, '..', '..', '..', 'tools', 'perf'))
+if perf_dir not in sys.path:
+  sys.path.append(perf_dir)
+from chrome_telemetry_build import chromium_config
+telemetry_dir = chromium_config.GetTelemetryDir()
 if telemetry_dir not in sys.path:
   sys.path.append(telemetry_dir)
 
 from telemetry.internal.browser import browser_options
 from telemetry.internal.browser import browser_finder
 from telemetry.core import exceptions
 from telemetry.core import util
 from telemetry.core import cros_interface
 from telemetry.internal.browser import extension_to_load
 
@@ skipping 536 matching lines @@
     try:
       extensions = self._browser.extensions.GetByExtensionId(
           'mkaemigholebcgchlkbankmihknojeak')
     except KeyError:
       return None
     for extension_page in extensions:
       pathname = extension_page.EvaluateJavaScript('document.location.pathname')
       if pathname == page_name:
         return extension_page
     return None