webrtc: Fix missing port forwarding on CrOS

telemetry/telemetry/internal/platform/android_platform_backend.py

Index: telemetry/telemetry/internal/platform/android_platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/android_platform_backend.py b/telemetry/telemetry/internal/platform/android_platform_backend.py
index c01561ffacda693d3a0af0fe4b56a54a9cad8502..987466f2dc9bd908c5db0907d7d60ca2176197da 100644
--- a/telemetry/telemetry/internal/platform/android_platform_backend.py
+++ b/telemetry/telemetry/internal/platform/android_platform_backend.py
@@ -153,6 +153,15 @@ class AndroidPlatformBackend(
   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 IsDeviceRemote(self):
+    # Android device is connected via adb which is on remote.
+    return True
+
   def IsDisplayTracingSupported(self):
     return bool(self.GetOSVersionName() >= 'J')