[android] Adds constants.GetOutDirectory() and converts test scripts to use it.

build/android/pylib/utils/report_results.py

Index: build/android/pylib/utils/report_results.py
diff --git a/build/android/pylib/utils/report_results.py b/build/android/pylib/utils/report_results.py
index 75ef3222d0d1bfc92692553846293ec5942922c3..e8323c2e6d2c7013f6fcc835c9a6905142ccbaf4 100644
--- a/build/android/pylib/utils/report_results.py
+++ b/build/android/pylib/utils/report_results.py
@@ -15,8 +15,7 @@ import flakiness_dashboard_results_uploader
 
 def _LogToFile(results, test_type, suite_name):
   """Log results to local files which can be used for aggregation later."""
-  log_file_path = os.path.join(constants.DIR_SOURCE_ROOT, 'out',
-                               constants.GetBuildType(), 'test_logs')
+  log_file_path = os.path.join(constants.GetBuildDirectory(), 'test_logs')
   if not os.path.exists(log_file_path):
     os.mkdir(log_file_path)
   full_file_name = os.path.join(