Posting to dashboard only the number of observations.

scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json

Index: scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json
diff --git a/scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json b/scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json
index 19f32ba0ab53cd639563bb6a6931ebb46637ec76..2a25c1b36c5b117adf5b9662f23e666ca41d47f8 100644
--- a/scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json
+++ b/scripts/slave/recipes/bisection/android_bisect_staging.expected/local_basic_recipe_failed_device.json
@@ -7342,7 +7342,7 @@
     ],
     "cwd": "[BUILDER_CACHE]/android_one_perf_bisect",
     "name": "Post bisect results",
-    "stdin": "{\"data\": {\"aborted_reason\": \"Step('Debug Info') failed with return_code 1\", \"bad_revision\": \"fc6dfc7ff5b1073408499478969261b826441144\", \"bisect_bot\": \"linux_perf_tester\", \"bug_id\": \"425582\", \"buildbot_log_url\": \"http://c.org/p/cr/builders/android_one_perf_bisect/builds/571\", \"change\": \"1465.45%\", \"command\": \"./tools/perf/run_benchmark -v --browser=android-chromium --output-format=valueset page_cycler_v2.intl_ar_fa_he\", \"culprit_data\": null, \"good_revision\": \"e28dc0d49c331def2a3bbf3ddd0096eb51551155\", \"metric\": \"warm_times/page_load_time\", \"revision_data\": [{\"commit_hash\": \"e28dc0d49c331def2a3bbf3ddd0096eb51551155\", \"depot_name\": \"chromium\", \"mean_value\": 11.0, \"result\": \"good\", \"revision_string\": \"chromium@e28dc0d49c\", \"std_dev\": 11.40175425099138, \"values\": [12, 13, 14, 15, 1]}, {\"commit_hash\": \"fc6dfc7ff5b1073408499478969261b826441144\", \"depot_name\": \"chromium\", \"mean_value\": 172.2, \"result\": \"bad\", \"revision_string\": \"chromium@fc6dfc7ff5\", \"std_dev\": 184.7127499659945, \"values\": [212, 213, 214, 215, 7]}], \"status\": \"completed\", \"test_type\": \"perf\", \"try_job_id\": null, \"warnings\": []}, \"url\": \"https://chromeperf.appspot.com/post_bisect_results\"}",
+    "stdin": "{\"data\": {\"aborted_reason\": \"Step('Debug Info') failed with return_code 1\", \"bad_revision\": \"fc6dfc7ff5b1073408499478969261b826441144\", \"bisect_bot\": \"linux_perf_tester\", \"bug_id\": \"425582\", \"buildbot_log_url\": \"http://c.org/p/cr/builders/android_one_perf_bisect/builds/571\", \"change\": \"1465.45%\", \"command\": \"./tools/perf/run_benchmark -v --browser=android-chromium --output-format=valueset page_cycler_v2.intl_ar_fa_he\", \"culprit_data\": null, \"good_revision\": \"e28dc0d49c331def2a3bbf3ddd0096eb51551155\", \"metric\": \"warm_times/page_load_time\", \"revision_data\": [{\"commit_hash\": \"e28dc0d49c331def2a3bbf3ddd0096eb51551155\", \"depot_name\": \"chromium\", \"mean_value\": 11.0, \"n_observations\": 5, \"result\": \"good\", \"revision_string\": \"chromium@e28dc0d49c\", \"std_dev\": 11.40175425099138}, {\"commit_hash\": \"fc6dfc7ff5b1073408499478969261b826441144\", \"depot_name\": \"chromium\", \"mean_value\": 172.2, \"n_observations\": 5, \"result\": \"bad\", \"revision_string\": \"chromium@fc6dfc7ff5\", \"std_dev\": 184.7127499659945}], \"status\": \"completed\", \"test_type\": \"perf\", \"try_job_id\": null, \"warnings\": []}, \"url\": \"https://chromeperf.appspot.com/post_bisect_results\"}",
     "stdout": "/path/to/tmp/json",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",