[telemetry] Removing flake in wpr_server.py caused by static port assignment from chrome/test/funct…

tools/telemetry/telemetry/adb_commands.py

Index: tools/telemetry/telemetry/adb_commands.py
diff --git a/tools/telemetry/telemetry/adb_commands.py b/tools/telemetry/telemetry/adb_commands.py
index d122aa5dc7bfafb0fe096f4415fd849d9f0d06ae..e410f060b78d11a189a3572ae317804eddce86c8 100644
--- a/tools/telemetry/telemetry/adb_commands.py
+++ b/tools/telemetry/telemetry/adb_commands.py
@@ -133,11 +133,13 @@ class Forwarder(object):
   def __init__(self, adb, *port_pairs):
     assert HasForwarder()
     tool = valgrind_tools.BaseTool()
-    self._host_port = port_pairs[0][0]
+    self._host_port = port_pairs[0][0] or port_pairs[0][1]
 
     new_port_pairs = []
     for port_pair in port_pairs:
-      if port_pair[1] is None:
+      if port_pair[0] is None:
+        new_port_pairs.append((port_pair[1], port_pair[1]))
+      elif port_pair[1] is None:
         new_port_pairs.append((port_pair[0], port_pair[0]))
       else:
         new_port_pairs.append(port_pair)