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

build/android/pylib/device/device_utils.py

Index: build/android/pylib/device/device_utils.py
diff --git a/build/android/pylib/device/device_utils.py b/build/android/pylib/device/device_utils.py
index ff99fccdc83729d0b3c88199cba46e116401875e..4adde1d47b273da180277eb0fcb8906c94e92fb6 100644
--- a/build/android/pylib/device/device_utils.py
+++ b/build/android/pylib/device/device_utils.py
@@ -9,6 +9,8 @@ Eventually, this will be based on adb_wrapper.
 """
 # pylint: disable=W0613
 
+import time
+
 import pylib.android_commands
 from pylib.device import adb_wrapper
 from pylib.device import decorators
@@ -70,9 +72,10 @@ class DeviceUtils(object):
       raise ValueError('Unsupported type passed for argument "device"')
     self._default_timeout = default_timeout
     self._default_retries = default_retries
+    assert(hasattr(self, decorators.DEFAULT_TIMEOUT_ATTR))
+    assert(hasattr(self, decorators.DEFAULT_RETRIES_ATTR))
 
-  @decorators.WithTimeoutAndRetriesFromInstance(
-      '_default_timeout', '_default_retries')
+  @decorators.WithTimeoutAndRetriesFromInstance()
   def IsOnline(self, timeout=None, retries=None):
     """ Checks whether the device is online.
 
@@ -86,8 +89,7 @@ class DeviceUtils(object):
     """
     return self.old_interface.IsOnline()
 
-  @decorators.WithTimeoutAndRetriesFromInstance(
-      '_default_timeout', '_default_retries')
+  @decorators.WithTimeoutAndRetriesFromInstance()
   def HasRoot(self, timeout=None, retries=None):
     """ Checks whether or not adbd has root privileges.
 
@@ -99,8 +101,7 @@ class DeviceUtils(object):
     """
     return self.old_interface.IsRootEnabled()
 
-  @decorators.WithTimeoutAndRetriesFromInstance(
-      '_default_timeout', '_default_retries')
+  @decorators.WithTimeoutAndRetriesFromInstance()
   def EnableRoot(self, timeout=None, retries=None):
     """ Restarts adbd with root privileges.
 
@@ -114,12 +115,51 @@ class DeviceUtils(object):
       raise device_errors.CommandFailedError(
           'adb root', 'Could not enable root.')
 
+  @decorators.WithTimeoutAndRetriesFromInstance()
+  def GetExternalStoragePath(self, timeout=None, retries=None):
+    """ Get the device's path to its SD card.
+
+    Args:
+      timeout: Same as for |IsOnline|.
+      retries: Same as for |IsOnline|.
+    Returns:
+      The device's path to its SD card.
+    """
+    try:
+      return self.old_interface.GetExternalStorage()
+    except AssertionError as e:
+      raise device_errors.CommandFailedError(str(e))
+
+  @decorators.WithTimeoutAndRetriesFromInstance()
+  def WaitUntilFullyBooted(self, wifi=False, timeout=None, retries=None):
+    """ Wait for the device to fully boot.
+
+    This means waiting for the device to boot, the package manager to be
+    available, and the SD card to be ready. It can optionally mean waiting
+    for wifi to come up, too.
+
+    Args:
+      wifi: A boolean indicating if we should wait for wifi to come up or not.
+      timeout: Same as for |IsOnline|.
+      retries: Same as for |IsOnline|.
+    Raises:
+      CommandTimeoutError if one of the component waits times out.
+      DeviceUnreachableError if the device becomes unresponsive.
+    """
+    self.old_interface.WaitForSystemBootCompleted(timeout)
+    self.old_interface.WaitForDevicePm()
+    self.old_interface.WaitForSdCardReady(timeout)
+    if wifi:
+      while not 'Wi-Fi is enabled' in (
+          self.old_interface.RunShellCommand('dumpsys wifi')):
+        time.sleep(0.1)
+
   def __str__(self):
     """Returns the device serial."""
     return self.old_interface.GetDevice()
 
   @staticmethod
-  def parallel(devices):
+  def parallel(devices=None, async=False):
     """ Creates a Parallelizer to operate over the provided list of devices.
 
     If |devices| is either |None| or an empty list, the Parallelizer will
@@ -127,13 +167,18 @@ class DeviceUtils(object):
 
     Args:
       devices: A list of either DeviceUtils instances or objects from
-               from which DeviceUtils instances can be constructed.
+               from which DeviceUtils instances can be constructed. If None,
+               all attached devices will be used.
+      async: If true, returns a Parallelizer that runs operations
+             asynchronously.
     Returns:
       A Parallelizer operating over |devices|.
     """
     if not devices or len(devices) == 0:
-      devices = pylib.android_commands.AndroidCommands.GetAttachedDevices()
-    return parallelizer.Parallelizer([
+      devices = pylib.android_commands.GetAttachedDevices()
+    parallelizer_type = (parallelizer.Parallelizer if async
+                         else parallelizer.SyncParallelizer)
+    return parallelizer_type([
         d if isinstance(d, DeviceUtils) else DeviceUtils(d)
         for d in devices])