[telemetry] Wire TsProxy through telemetry's network stack.

telemetry/telemetry/internal/platform/platform_backend.py

Index: telemetry/telemetry/internal/platform/platform_backend.py
diff --git a/telemetry/telemetry/internal/platform/platform_backend.py b/telemetry/telemetry/internal/platform/platform_backend.py
index aedd6ad44aea81508bb10aed8228e6db4383ceee..2aead5b48978141ab22865ba15217f2408f602fe 100644
--- a/telemetry/telemetry/internal/platform/platform_backend.py
+++ b/telemetry/telemetry/internal/platform/platform_backend.py
@@ -85,6 +85,9 @@ class PlatformBackend(object):
       self._forwarder_factory = do_nothing_forwarder.DoNothingForwarderFactory()
     return self._forwarder_factory
 
+  def GetPortPairForForwarding(self, local_port):
+    return forwarders.PortPair(local_port=local_port, remote_port=local_port)
+
   def GetRemotePort(self, port):
     return port
 
@@ -103,13 +106,6 @@ class PlatformBackend(object):
 
     self._running_browser_backends.discard(browser_backend)
 
-  def GetWprPortPairs(self):
-    """Return suitable port pairs to be used for web page replay."""
-    return forwarders.PortPairs(
-        http=forwarders.PortPair(0, 0),
-        https=forwarders.PortPair(0, 0),
-        dns=None)
-
   def IsDisplayTracingSupported(self):
     return False