webrtc: Fix missing port forwarding on CrOS

telemetry/telemetry/internal/platform/android_platform_backend.py

 # Copyright 2013 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 posixpath
 import re
 import subprocess
 import tempfile
@@ skipping 156 matching lines @@
   def IsAosp(self):
     description = self._device.GetProp('ro.build.description', cache=True)
     if description is not None:
       return 'aosp' in description
     return False
 
 
   def GetRemotePort(self, port):
     return forwarder.Forwarder.DevicePortForHostPort(port) or 0
 
+  def CreatePortForwarder(self, port_pair, use_remote_port_forwarding):
+    # use_remote_port_forwarding is ignored as it is always true for
+    # Android device.
+    return self.forwarder_factory.Create(port_pair)
+
+  def IsRemoteDevice(self):
+    # Android device is connected via adb which is on remote.
+    return True
+
   def IsDisplayTracingSupported(self):
     return bool(self.GetOSVersionName() >= 'J')
 
   def StartDisplayTracing(self):
     assert not self._surface_stats_collector
     # Clear any leftover data from previous timed out tests
     self._raw_display_frame_rate_measurements = []
     self._surface_stats_collector = \
         surface_stats_collector.SurfaceStatsCollector(self._device)
     self._surface_stats_collector.Start()
@@ skipping 657 matching lines @@
   for process in psutil.process_iter():
     try:
       if psutil.version_info >= (2, 0):
         if 'adb' in process.name():
           process.cpu_affinity([0])
       else:
         if 'adb' in process.name:
           process.set_cpu_affinity([0])
     except (psutil.NoSuchProcess, psutil.AccessDenied):
       logging.warn('Failed to set adb process CPU affinity')