[Android] Add a configurable environment for devil/.

build/android/PRESUBMIT.py

Index: build/android/PRESUBMIT.py
diff --git a/build/android/PRESUBMIT.py b/build/android/PRESUBMIT.py
index 668638956f1ba7d607b2a153c015e41d3deef7ba..d029fb32ffad96f86e0ef9c4b2a7e751e6804b76 100644
--- a/build/android/PRESUBMIT.py
+++ b/build/android/PRESUBMIT.py
@@ -12,9 +12,12 @@ 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,
@@ -34,7 +37,7 @@ def CommonChecks(input_api, output_api):
 
   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(
@@ -42,10 +45,6 @@ def CommonChecks(input_api, output_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',
@@ -53,6 +52,25 @@ def CommonChecks(input_api, output_api):
           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