Support sharding for swarmed isolated script tests.

scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json

Index: scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json
diff --git a/scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json b/scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json
index bcd6a8244467e27d23a93e7e88798d472f94d8b2..2369d43f4f2578b5c9f88557dd82a082cc55908c 100644
--- a/scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json
+++ b/scripts/slave/recipes/chromium_trybot.expected/dynamic_isolated_script_test_with_args_on_trybot.json
@@ -589,10 +589,11 @@
     "name": "telemetry_gpu_unittests (with patch) on Ubuntu-12.04",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@outdir_json@{@@@",
-      "@@@STEP_LOG_LINE@outdir_json@  \"0/output.json\": \"{\\\"failures\\\": [], \\\"valid\\\": true}\", @@@",
+      "@@@STEP_LOG_LINE@outdir_json@  \"0/output.json\": \"{\\\"successes\\\": [\\\"test1.Test1\\\", \\\"test2.Test2\\\"], \\\"failures\\\": [], \\\"valid\\\": true}\", @@@",
       "@@@STEP_LOG_LINE@outdir_json@  \"summary.json\": \"{\\\"shards\\\": [{\\\"internal_failure\\\": false, \\\"failure\\\": false}]}\"@@@",
       "@@@STEP_LOG_LINE@outdir_json@}@@@",
-      "@@@STEP_LOG_END@outdir_json@@@"
+      "@@@STEP_LOG_END@outdir_json@@@",
+      "@@@STEP_LINK@shard #0@https://chromium-swarm.appspot.com/user/task/10000@@@"
     ]
   },
   {