Support HTTP test-server based net unit tests on Android.

build/android/pylib/base_test_sharder.py

Index: build/android/pylib/base_test_sharder.py
diff --git a/build/android/pylib/base_test_sharder.py b/build/android/pylib/base_test_sharder.py
index 5306769155050ba032364650daeecaa1581e609b..c884df1894c5df71671f2c17cc496b0c1c2b532e 100644
--- a/build/android/pylib/base_test_sharder.py
+++ b/build/android/pylib/base_test_sharder.py
@@ -7,6 +7,7 @@ import android_commands
 import logging
 import multiprocessing
 
+from forwarder import Forwarder
 from test_result import TestResults
 
 
@@ -41,10 +42,11 @@ class BaseTestSharder(object):
   # See more in SetTestsContainer.
   tests_container = None
 
-  def __init__(self, attached_devices):
+  def __init__(self, attached_devices, build_type='Debug'):
     self.attached_devices = attached_devices
     self.retries = 1
     self.tests = []
+    self.build_type = build_type
 
   def CreateShardedTestRunner(self, device, index):
     """Factory function to create a suite-specific test runner.
@@ -60,11 +62,11 @@ class BaseTestSharder(object):
 
   def SetupSharding(self, tests):
     """Called before starting the shards."""
-    pass
+    Forwarder(None, self.build_type).KillHostForwarder()
 
   def OnTestsCompleted(self, test_runners, test_results):
     """Notifies that we completed the tests."""
-    pass
+    Forwarder(None, self.build_type).KillHostForwarder()
 
   def RunShardedTests(self):
     """Runs the tests in all connected devices.