[Android] Convert to DeviceUtils versions of WaitUntilFullyBooted and GetExternalStoragePath.

build/android/pylib/utils/emulator.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.
 
 """Provides an interface to start and stop Android emulator.
 
   Emulator: The class provides the methods to launch/shutdown the emulator with
             the android virtual device named 'avd_armeabi' .
 """
 
@@ skipping 398 matching lines @@
         run_command.RunCommand(adb_cmd)
       self.popen.poll()
       if self.popen.returncode != None:
         raise EmulatorLaunchException('EMULATOR DIED')
     if seconds_waited >= self._LAUNCH_TIMEOUT:
       raise EmulatorLaunchException('TIMEOUT with wait-for-device')
     logging.info('Seconds waited on wait-for-device: %d', seconds_waited)
     if wait_for_boot:
       # Now that we checked for obvious problems, wait for a boot complete.
       # Waiting for the package manager is sometimes problematic.
+      # TODO(jbudorick) Convert this once waiting for the package manager and
+      #                 the external storage is no longer problematic.
       d = device_utils.DeviceUtils(self.device_serial)
       d.old_interface.WaitForSystemBootCompleted(self._WAITFORBOOT_TIMEOUT)
 
   def Shutdown(self):
     """Shuts down the process started by launch."""
     self._DeleteAVD()
     if self.popen:
       self.popen.poll()
       if self.popen.returncode == None:
         self.popen.kill()
       self.popen = None
 
   def _ShutdownOnSignal(self, _signum, _frame):
     logging.critical('emulator _ShutdownOnSignal')
     for sig in self._SIGNALS:
       signal.signal(sig, signal.SIG_DFL)
     self.Shutdown()
     raise KeyboardInterrupt  # print a stack
 
   def _InstallKillHandler(self):
     """Install a handler to kill the emulator when we exit unexpectedly."""
     for sig in self._SIGNALS:
       signal.signal(sig, self._ShutdownOnSignal)