Posting to dashboard only the number of observations.

scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json

Index: scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json
diff --git a/scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json b/scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json
index c07df66e6956aeb406232b81df209cd726cb7acc..1a23ce34d46b655b7f5c97aa8d5835ce08ba519f 100644
--- a/scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json
+++ b/scripts/slave/recipe_modules/auto_bisect_staging/example.expected/basic_win32_bisect.json
@@ -2220,7 +2220,7 @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "Post bisect results",
-    "stdin": "{\"data\": {\"aborted_reason\": \"Bisect cannot identify a culprit: Bisect failed to reproduce the regression with enough confidence.\", \"bad_revision\": \"00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111\", \"bisect_bot\": \"win_perf_tester\", \"bug_id\": \"-1\", \"buildbot_log_url\": \"http://build.chromium.org/p/chromium/builders/win_perf_bisect/builds/571\", \"change\": null, \"command\": \"src/tools/perf/run_benchmark -v --browser=release --output-format=valueset smoothness.tough_scrolling_cases\", \"culprit_data\": null, \"good_revision\": \"a6298e4afedbf2cd461755ea6f45b0ad64222222\", \"metric\": \"mean_input_event_latency/mean_input_event_latency\", \"revision_data\": [{\"commit_hash\": \"a6298e4afedbf2cd461755ea6f45b0ad64222222\", \"depot_name\": \"chromium\", \"mean_value\": 21.0, \"result\": \"good\", \"revision_string\": \"chromium@a6298e4afe\", \"std_dev\": 3.1622776601683795, \"values\": [19, 20, 21, 22, 23]}, {\"commit_hash\": \"00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111\", \"depot_name\": \"chromium\", \"mean_value\": 21.0, \"result\": \"bad\", \"revision_string\": \"chromium@00316c9ddf\", \"std_dev\": 3.1622776601683795, \"values\": [19, 20, 21, 22, 23]}], \"status\": \"failed\", \"test_type\": \"perf\", \"try_job_id\": null, \"warnings\": []}, \"url\": \"https://chromeperf.appspot.com/post_bisect_results\"}",
+    "stdin": "{\"data\": {\"aborted_reason\": \"Bisect cannot identify a culprit: Bisect failed to reproduce the regression with enough confidence.\", \"bad_revision\": \"00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111\", \"bisect_bot\": \"win_perf_tester\", \"bug_id\": \"-1\", \"buildbot_log_url\": \"http://build.chromium.org/p/chromium/builders/win_perf_bisect/builds/571\", \"change\": null, \"command\": \"src/tools/perf/run_benchmark -v --browser=release --output-format=valueset smoothness.tough_scrolling_cases\", \"culprit_data\": null, \"good_revision\": \"a6298e4afedbf2cd461755ea6f45b0ad64222222\", \"metric\": \"mean_input_event_latency/mean_input_event_latency\", \"revision_data\": [{\"commit_hash\": \"a6298e4afedbf2cd461755ea6f45b0ad64222222\", \"depot_name\": \"chromium\", \"mean_value\": 21.0, \"n_observations\": 5, \"result\": \"good\", \"revision_string\": \"chromium@a6298e4afe\", \"std_dev\": 3.1622776601683795}, {\"commit_hash\": \"00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111\", \"depot_name\": \"chromium\", \"mean_value\": 21.0, \"n_observations\": 5, \"result\": \"bad\", \"revision_string\": \"chromium@00316c9ddf\", \"std_dev\": 3.1622776601683795}], \"status\": \"failed\", \"test_type\": \"perf\", \"try_job_id\": null, \"warnings\": []}, \"url\": \"https://chromeperf.appspot.com/post_bisect_results\"}",
     "stdout": "/path/to/tmp/json",
     "~followup_annotations": [
       "@@@STEP_TEXT@Failed to upload result to Perf Dashboard. Error response: None@@@",