Add exit code for infra failures to testrunner script.

build/android/pylib/base/base_error.py

Index: build/android/pylib/base/base_error.py
diff --git a/build/android/pylib/base/base_error.py b/build/android/pylib/base/base_error.py
new file mode 100644
index 0000000000000000000000000000000000000000..31eaa54c446c52c589fd699b10e18a16a10caabc
--- /dev/null
+++ b/build/android/pylib/base/base_error.py
@@ -0,0 +1,16 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.

[jbudorick, 2015/02/23 22:13:00]

changed my mind, put this in pylib/utils/

[jbudorick, 2015/02/23 22:16:03]

(reasoning here: we're going to have to eventually extract parts of pylib into
their own library for telemetry etc, and currently those parts are limited to
pylib/device/, pylib/utils/, and some parts of pylib/. Since pylib/device/
depends on this, it's easier if we put it in pylib/utils/ for now.)

[mikecase (-- gone --), 2015/02/23 22:29:27]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+class BaseError(Exception):
+  """Base error for all test runner errors."""
+
+  def __init__(self, message, is_infra_error=False):
+    super(BaseError, self).__init__(message)
+    self._is_infra_error = is_infra_error
+
+  @property
+  def is_infra_error(self):
+    """Property to indicate if error was caused by an infrastructure issue."""
+    return self._is_infra_error