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

build/android/pylib/chrome_test_server_spawner.py

 # Copyright 2013 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.
 
 """A "Test Server Spawner" that handles killing/stopping per-test test servers.
 
 It's used to accept requests from the device to spawn and kill instances of the
 chrome test server on the host.
 """
 
@@ skipping 231 matching lines @@
                               'testserver.py')] + self.command_line
     logging.info('Running: %s', command)
     self.process = subprocess.Popen(
         command, preexec_fn=self._CloseUnnecessaryFDsForTestServerProcess)
     if self.process:
       if self.pipe_out:
         self.is_ready = self._WaitToStartAndGetPortFromTestServer()
       else:
         self.is_ready = _CheckPortStatus(self.host_port, True)
     if self.is_ready:
-      Forwarder.Map([(0, self.host_port)], self.adb, constants.GetBuildType(),
-                    self.tool)
+      Forwarder.Map([(0, self.host_port)], self.adb, self.tool)
       # Check whether the forwarder is ready on the device.
       self.is_ready = False
       device_port = Forwarder.DevicePortForHostPort(self.host_port)
       if device_port and _CheckDevicePortStatus(self.adb, device_port):
         self.is_ready = True
         self.forwarder_device_port = device_port
     # Wake up the request handler thread.
     self.ready_event.set()
     # Keep thread running until Stop() gets called.
     _WaitUntil(lambda: self.stop_flag, max_attempts=sys.maxint)
@@ skipping 164 matching lines @@
 
   def CleanupState(self):
     """Cleans up the spawning server state.
 
     This should be called if the test server spawner is reused,
     to avoid sharing the test server instance.
     """
     if self.server.test_server_instance:
       self.server.test_server_instance.Stop()
       self.server.test_server_instance = None