[Android] Add failures to results log line for Host Info step.

scripts/slave/recipes/android/perf.expected/test_failure.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.perf",
       "--builder",
       "Android Nexus5 Perf (1)",
@@ skipping 473 matching lines @@
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ], @@@",
       "@@@STEP_LOG_LINE@json.output@    \"free_disk_space\": \"free_disk_space\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"num_cpus\": \"num_cpus\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"os_release\": \"os_release\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"os_system\": \"os_system\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"processor\": \"processor\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"python_path\": \"python_path\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"python_version\": \"python_version\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
-      "@@@STEP_LOG_LINE@json.output@  \"failures\": [@@@",
-      "@@@STEP_LOG_LINE@json.output@    \"Failure A\", @@@",
-      "@@@STEP_LOG_LINE@json.output@    \"Failure B\"@@@",
-      "@@@STEP_LOG_LINE@json.output@  ], @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"failures\": [], @@@",
       "@@@STEP_LOG_LINE@json.output@  \"valid\": true@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
-      "@@@STEP_LOG_END@json.output@@@",
-      "@@@STEP_LOG_LINE@Failure A@Failure A@@@",
-      "@@@STEP_LOG_END@Failure A@@@",
-      "@@@STEP_LOG_LINE@Failure B@Failure B@@@",
-      "@@@STEP_LOG_END@Failure B@@@"
+      "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/tools/perf/run_benchmark",
       "list",
       "--browser",
       "android-chromium",
@@ skipping 304 matching lines @@
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "reason": "sharded perf tests failed [StepFailure(\"Step('perf_test.foo') failed with return_code 1\",)]",
     "recipe_result": null,
     "status_code": 1
   }
 ]