webrtc: Fix missing port forwarding on CrOS

telemetry/telemetry/internal/platform/cros_platform_backend.py

Index: telemetry/telemetry/internal/platform/cros_platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/cros_platform_backend.py b/telemetry/telemetry/internal/platform/cros_platform_backend.py
index 01f2034bd0f30f078cf17b86677e414694a6b436..f85ab7a9cff96d64737adc929b160f727ab5b18f 100644
--- a/telemetry/telemetry/internal/platform/cros_platform_backend.py
+++ b/telemetry/telemetry/internal/platform/cros_platform_backend.py
@@ -55,6 +55,13 @@ class CrosPlatformBackend(
       return port
     return self._cri.GetRemotePort()
 
+  def CreatePortForwarder(self, port_pair, use_remote_port_forwarding=False):
+    return self.forwarder_factory.Create(port_pair, use_remote_port_forwarding)
+
+  def IsDeviceRemote(self):
+    # Check if CrOS device is remote

[achuithb, 2017/07/19 17:50:32]

nit: period at the end of comment

[cywang, 2017/07/21 09:21:22]

Done.

+    return self._cri and not self._cri.local
+
   def IsThermallyThrottled(self):
     raise NotImplementedError()