Rename upload_gtest_test_results.py to upload_test_results.py.

scripts/slave/recipes/chromium.expected/full_chromium_win_Win10_Tests_x64.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\kill_processes.py"
     ],
     "name": "taskkill"
   },
   {
@@ skipping 462 matching lines @@
     },
     "name": "browser_tests on Windows-10-10586",
     "~followup_annotations": [
       "@@@STEP_LINK@shard #0 isolated out@blah@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
-      "RECIPE_MODULE[build::test_results]\\resources\\upload_gtest_test_results.py",
-      "--input-gtest-json",
+      "RECIPE_MODULE[build::test_results]\\resources\\upload_test_results.py",
+      "--input-json",
       "{\"per_iteration_data\": [{\"Test.One\": [{\"elapsed_time_ms\": 0, \"output_snippet\": \"\", \"status\": \"SUCCESS\"}], \"Test.Three\": [{\"elapsed_time_ms\": 0, \"output_snippet\": \"\", \"status\": \"SUCCESS\"}], \"Test.Two\": [{\"elapsed_time_ms\": 0, \"output_snippet\": \"\", \"status\": \"SUCCESS\"}]}], \"swarming_summary\": {\"shards\": [{\"outputs_ref\": {\"view_url\": \"blah\"}}]}}",
       "--master-name",
       "chromium.win",
       "--builder-name",
       "Win10 Tests x64",
       "--build-number",
       "571",
       "--test-type",
       "browser_tests on Windows-10-10586",
       "--test-results-server",
@@ skipping 20 matching lines @@
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
     },
     "name": "process_dumps"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]