Revert "Get rid of testlistjson query parameter."

Tools/TestResultServer/handlers/testfilehandler.py

Index: Tools/TestResultServer/handlers/testfilehandler.py
diff --git a/Tools/TestResultServer/handlers/testfilehandler.py b/Tools/TestResultServer/handlers/testfilehandler.py
index 9fe16a0d34a25af163352797f084ffd72ea8b684..90bff6b6eae77f8c3d0cf9550f1f62747df214ca 100644
--- a/Tools/TestResultServer/handlers/testfilehandler.py
+++ b/Tools/TestResultServer/handlers/testfilehandler.py
@@ -51,6 +51,7 @@ PARAM_BEFORE = "before"
 PARAM_NUM_FILES = "numfiles"
 PARAM_KEY = "key"
 PARAM_TEST_TYPE = "testtype"
+PARAM_TEST_LIST_JSON = "testlistjson"
 PARAM_CALLBACK = "callback"
 
 
@@ -154,6 +155,21 @@ class GetFile(webapp2.RequestHandler):
         file.load_data()
         return file.data, file.date
 
+    def _get_test_list_json(self, master, builder, test_type, build_number):
+        """Return json file with test name list only, do not include test
+           results and other non-test-data .
+
+        Args:
+            builder: builder name.
+            test_type: type of test results.
+        """
+
+        json, date = self._get_file_content(master, builder, test_type, build_number, "results.json")
+        if not json:
+            return None
+
+        return JsonResults.get_test_list(builder, json), date
+
     def _serve_json(self, json, modified_date):
         if json:
             if "If-Modified-Since" in self.request.headers:
@@ -180,6 +196,7 @@ class GetFile(webapp2.RequestHandler):
         name = self.request.get(PARAM_NAME)
         before = self.request.get(PARAM_BEFORE)
         num_files = self.request.get(PARAM_NUM_FILES)
+        test_list_json = self.request.get(PARAM_TEST_LIST_JSON)
         callback_name = self.request.get(PARAM_CALLBACK)
 
         logging.debug(
@@ -188,6 +205,8 @@ class GetFile(webapp2.RequestHandler):
 
         if key:
             json, date = self._get_file_content_from_key(key)
+        elif test_list_json:
+            json, date = self._get_test_list_json(master, builder, test_type, build_number)
         elif num_files or not master or not builder or not test_type or (not build_number and not JsonResults.is_aggregate_file(name)) or not name:
             limit = int(num_files) if num_files else 100
             self._get_file_list(master, builder, test_type, build_number, name, before, limit, callback_name)