TestResultsServer: special handling for aggregate file requests.

Tools/TestResultServer/model/jsonresults.py

Index: Tools/TestResultServer/model/jsonresults.py
diff --git a/Tools/TestResultServer/model/jsonresults.py b/Tools/TestResultServer/model/jsonresults.py
index 3cd71ad7a4ac620e1d2e74eb551e3417be9c8ed4..1926f705cacd76dca15c5ff6de559cd008adc2ae 100755
--- a/Tools/TestResultServer/model/jsonresults.py
+++ b/Tools/TestResultServer/model/jsonresults.py
@@ -114,6 +114,10 @@ def _is_directory(subtree):
 
 
 class JsonResults(object):
+    @staticmethod
+    def is_aggregate_file(name):
+        return name in (JSON_RESULTS_FILE, JSON_RESULTS_FILE_SMALL)
+
     @classmethod
     def _strip_prefix_suffix(cls, data):
         if data.startswith(JSON_RESULTS_PREFIX) and data.endswith(JSON_RESULTS_SUFFIX):