[Telemetry] Fix cros running locally.

This was broken by my recent forwarder refactor.

BUG=
Notry=true

Review URL: https://codereview.chromium.org/162433002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251008 0039d316-1c4b-4281-b951-d872f2087c98

tools/telemetry/telemetry/core/backends/chrome/cros_browser_backend.py

@@ -194,7 +194,9 @@ class CrOSBrowserBackend(chrome_browser_backend.ChromeBrowserBackend):
     """Oobe.LoginForTesting was introduced after branch 1599."""
     return self.chrome_branch_number > 1599
 
-  def GetRemotePort(self, _):
+  def GetRemotePort(self, port):
+    if self._cri.local:
+      return port
     return self._cri.GetRemotePort()
 
   def __del__(self):