auto import from //branches/cupcake_rel/...@140373
diff --git a/testrunner/android_build.py b/testrunner/android_build.py
new file mode 100644
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--- /dev/null
+++ b/testrunner/android_build.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python2.4
+#
+#
+# Copyright 2008, The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); 
+# you may not use this file except in compliance with the License. 
+# You may obtain a copy of the License at 
+#
+#     http://www.apache.org/licenses/LICENSE-2.0 
+#
+# Unless required by applicable law or agreed to in writing, software 
+# distributed under the License is distributed on an "AS IS" BASIS, 
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+# See the License for the specific language governing permissions and 
+# limitations under the License.
+
+"""Contains utility functions for interacting with the Android build system."""
+
+# Python imports
+import os
+
+# local imports
+import errors
+import logger
+
+
+def GetTop():
+  """Returns the full pathname of the "top" of the Android development tree.
+
+  Assumes build environment has been properly configured by envsetup &
+  lunch/choosecombo.
+
+  Returns:
+    the absolute file path of the Android build root.
+
+  Raises:
+    AbortError: if Android build root could not be found.
+  """
+  # TODO: does this need to be reimplemented to be like gettop() in envsetup.sh
+  root_path = os.getenv('ANDROID_BUILD_TOP')
+  if root_path is None:
+    logger.Log('Error: ANDROID_BUILD_TOP not defined. Please run envsetup.sh')
+    raise errors.AbortError
+  return root_path