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

tools/android/loading/devtools_monitor.py

 # Copyright (c) 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.
 
 """Library handling DevTools websocket interaction.
 """
 
 import httplib
 import json
 import logging
 import os
 import sys
 
 file_dir = os.path.dirname(__file__)
-sys.path.append(os.path.join(file_dir, '..', '..', 'telemetry'))
+sys.path.append(os.path.join(file_dir, '..', '..', 'perf'))
+from chrome_telemetry_build import chromium_config
+sys.path.append(chromium_config.GetTelemetryDir())
 
 from telemetry.internal.backends.chrome_inspector import inspector_websocket
 from telemetry.internal.backends.chrome_inspector import websocket
 
 
 class DevToolsConnectionException(Exception):
   def __init__(self, message):
     super(DevToolsConnectionException, self).__init__(message)
     logging.warning("DevToolsConnectionException: " + message)
 
@@ skipping 140 matching lines @@
       event: (dict) complete event.
     """
     pass
 
 
 class Track(Listener):
   """Collects data from a DevTools server."""
   def GetEvents(self):
     """Returns a list of collected events, finalizing the state if necessary."""
     pass