[Telemetry] Move WPR life cycle from browser to platform

tools/telemetry/telemetry/internal/forwarders/forwarders_unittest.py

Index: tools/telemetry/telemetry/internal/forwarders/forwarders_unittest.py
diff --git a/tools/telemetry/telemetry/internal/forwarders/forwarders_unittest.py b/tools/telemetry/telemetry/internal/forwarders/forwarders_unittest.py
new file mode 100644
index 0000000000000000000000000000000000000000..173b97c9ccb5b24145d148e81c4b50b962d96252
--- /dev/null
+++ b/tools/telemetry/telemetry/internal/forwarders/forwarders_unittest.py
@@ -0,0 +1,38 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+import unittest
+
+from telemetry.internal import forwarders
+
+
+class PortPairsUnittest(unittest.TestCase):
+  
+  def testPortPairs(self):
+    port_pairs = forwarders.PortPairs(
+      http=forwarders.PortPair(local_port=1, remote_port=2),
+      https=forwarders.PortPair(local_port=3, remote_port=4),
+      dns=forwarders.PortPair(local_port=5, remote_port=6),
+    )
+
+    self.assertEquals(port_pairs,
+                      forwarders.PortPairs.Make(
+                          http=(1, 2), https=(3, 4), dns=(5, 6)))
+    self.assertEquals(port_pairs.local_ports,
+                      forwarders.PortSet(1, 3, 5))
+    self.assertEquals(port_pairs.remote_ports,
+                      forwarders.PortSet(2, 4, 6))
+
+  def testPortPairs_noDns(self):
+    port_pairs = forwarders.PortPairs(
+      http=forwarders.PortPair(local_port=1, remote_port=2),
+      https=forwarders.PortPair(local_port=3, remote_port=4),
+      dns=None
+    )
+
+    self.assertEquals(port_pairs,
+                      forwarders.PortPairs.Make(http=(1, 2), https=(3, 4)))
+    self.assertEquals(port_pairs.local_ports,
+                      forwarders.PortSet(1, 3, None))
+    self.assertEquals(port_pairs.remote_ports,
+                      forwarders.PortSet(2, 4, None))