[android] Relands: Adds constants.GetBuildDirectory() and converts test scripts to use it.

build/android/pylib/base/base_test_runner.py

 # Copyright (c) 2012 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.
 
 """Base class for running tests on a single device."""
 
 import contextlib
 import httplib
 import logging
 import os
@@ skipping 106 matching lines @@
     if self._http_server.StartupHttpServer():
       logging.info('http server started: http://localhost:%s',
                    self._http_server.port)
     else:
       logging.critical('Failed to start http server')
     self._ForwardPortsForHttpServer()
     return (self._forwarder_device_port, self._http_server.port)
 
   def _ForwardPorts(self, port_pairs):
     """Forwards a port."""
-    Forwarder.Map(port_pairs, self.adb, constants.GetBuildType(), self.tool)
+    Forwarder.Map(port_pairs, self.adb, self.tool)
 
   def _UnmapPorts(self, port_pairs):
     """Unmap previously forwarded ports."""
     for (device_port, _) in port_pairs:
       Forwarder.UnmapDevicePort(device_port, self.adb)
 
   # Deprecated: Use ForwardPorts instead.
   def StartForwarder(self, port_pairs):
     """Starts TCP traffic forwarding for the given |port_pairs|.
 
@@ skipping 58 matching lines @@
         break
       else:
         error_msgs.append(error_msg)
       self._spawning_server.Stop()
       # Wait for 2 seconds then restart.
       time.sleep(2)
     if not server_ready:
       logging.error(';'.join(error_msgs))
       raise Exception('Can not start the test spawner server.')
     self._PushTestServerPortInfoToDevice()