[Android] Add a configurable environment for devil/.

build/android/PRESUBMIT.py

 # Copyright (c) 2013 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.
 
 """Presubmit script for android buildbot.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into depot_tools.
 """
 
 
 def CommonChecks(input_api, output_api):
   output = []
 
+  build_android_dir = input_api.PresubmitLocalPath()
+  chromium_src_dir = input_api.os_path.join(build_android_dir, '..', '..')
+
   def J(*dirs):
     """Returns a path relative to presubmit directory."""
-    return input_api.os_path.join(input_api.PresubmitLocalPath(), *dirs)
+    return input_api.os_path.join(build_android_dir, *dirs)
 
   output.extend(input_api.canned_checks.RunPylint(
       input_api,
       output_api,
       pylintrc='pylintrc',
       black_list=[r'pylib/symbols/.*\.py$', r'gyp/.*\.py$', r'gn/.*\.py'],
       extra_paths_list=[J(), J('buildbot')]))
   output.extend(input_api.canned_checks.RunPylint(
       input_api,
       output_api,
       white_list=[r'gyp/.*\.py$', r'gn/.*\.py'],
       extra_paths_list=[J('gyp'), J('gn')]))
 
   # Disabled due to http://crbug.com/410936
   #output.extend(input_api.canned_checks.RunUnitTestsInDirectory(
   #input_api, output_api, J('buildbot', 'tests')))
 
   pylib_test_env = dict(input_api.environ)
   pylib_test_env.update({
-      'PYTHONPATH': input_api.PresubmitLocalPath(),
+      'PYTHONPATH': build_android_dir,
       'PYTHONDONTWRITEBYTECODE': '1',
   })
   output.extend(input_api.canned_checks.RunUnitTests(
       input_api,
       output_api,
       unit_tests=[
           J('.', 'emma_coverage_stats_test.py'),
-          J('devil', 'android', 'battery_utils_test.py'),
-          J('devil', 'android', 'device_utils_test.py'),
-          J('devil', 'android', 'md5sum_test.py'),
-          J('devil', 'android', 'logcat_monitor_test.py'),
           J('pylib', 'base', 'test_dispatcher_unittest.py'),
           J('pylib', 'gtest', 'gtest_test_instance_test.py'),
           J('pylib', 'instrumentation',
             'instrumentation_test_instance_test.py'),
           J('pylib', 'results', 'json_results_test.py'),
       ],
       env=pylib_test_env))
+
+
+  devil_test_env = dict(pylib_test_env)
+  devil_test_env.update({
+      'DEVIL_BINARY_DIR':
+          input_api.os_path.join(chromium_src_dir, 'output', 'directory'),
+      'DEVIL_PYMOCK_PATH':
+          input_api.os_path.join(chromium_src_dir, 'third_party', 'pymock')
+  })
+  output.extend(input_api.canned_checks.RunUnitTests(
+      input_api,
+      output_api,
+      unit_tests=[
+          J('devil', 'android', 'battery_utils_test.py'),
+          J('devil', 'android', 'device_utils_test.py'),
+          J('devil', 'android', 'md5sum_test.py'),
+          J('devil', 'android', 'logcat_monitor_test.py'),
+      ],
+      env=devil_test_env))
   return output
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return CommonChecks(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return CommonChecks(input_api, output_api)