Rewrite of the EnrollEnterpriseDevice PyAuto automation hook for WebUI.

chrome/test/pyautolib/pyauto_errors.py

Index: chrome/test/pyautolib/pyauto_errors.py
diff --git a/chrome/test/pyautolib/pyauto_errors.py b/chrome/test/pyautolib/pyauto_errors.py
index a5680e557442dafba84bf4b517db28737d0053a1..853e67c2e98d57e29923043d123790c0adfc0be5 100644
--- a/chrome/test/pyautolib/pyauto_errors.py
+++ b/chrome/test/pyautolib/pyauto_errors.py
@@ -8,11 +8,18 @@ class JavascriptRuntimeError(RuntimeError):
   """Represent an error raised by injected Javascript."""
   pass
 
+
 class JSONInterfaceError(RuntimeError):
   """Represent an error in the JSON ipc interface."""
   pass
 
+
 class NTPThumbnailNotShownError(RuntimeError):
   """Represent an error from attempting to manipulate a NTP thumbnail that
   is not visible to a real user."""
   pass
+
+
+class EnrollmentError(RuntimeError):
+  """Represent an error enrolling the Chrome OS device."""
+  pass