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

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

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.perf",
       "--builder",
       "Android Nexus5 Perf (1)",
@@ skipping 481 matching lines @@
       "@@@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@  \"valid\": true@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@",
-      "@@@STEP_EXCEPTION@@@"
+      "@@@STEP_LOG_LINE@Failure A@Failure A@@@",
+      "@@@STEP_LOG_END@Failure A@@@",

[rnephew (Reviews Here), 2016/08/02 01:03:49]

This is the only one where a failure should have been detected, but it wasn't
before.

+      "@@@STEP_LOG_LINE@Failure B@Failure B@@@",
+      "@@@STEP_LOG_END@Failure B@@@",
+      "@@@STEP_FAILURE@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/tools/perf/run_benchmark",
       "list",
       "--browser",
       "android-chromium",
@@ skipping 301 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.remove(report)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]