Avoid nesting steps called under waiting for x:

scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json

Index: scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json
diff --git a/scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json b/scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json
index 00b8c5fc4bdc4a26e335c75184d52bc3ad8e3ae6..18e9b6ceda16b9f60963f665272d7cbeaafc4adf 100644
--- a/scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json
+++ b/scripts/slave/recipe_modules/auto_bisect/example.expected/missing_metric_test.json
@@ -218,21 +218,6 @@
   },
   {
     "cmd": [
-      "git",
-      "footers",
-      "--position",
-      "a6298e4afedbf2cd461755ea6f45b0ad64222222"
-    ],
-    "cwd": "[TMP_BASE]/fake_checkout_tmp_1",
-    "name": "resolving hash a6298e4afedbf2cd461755ea6f45b0ad64222222",
-    "stdout": "/path/to/tmp/"
-  },
-  {
-    "cmd": [],
-    "name": "Waiting for chromium@a6298e4afe"
-  },
-  {
-    "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
@@ -242,14 +227,11 @@
       "ls",
       "gs://chrome-perf/Linux Builder/full-build-linux_a6298e4afedbf2cd461755ea6f45b0ad64222222.zip"
     ],
-    "name": "Waiting for chromium@a6298e4afe.gsutil ls",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
+    "name": "gsutil ls (3)"
   },
   {
     "cmd": [],
-    "name": "Waiting for chromium@a6298e4afe.Triggering test job for a6298e4afedbf2cd461755ea6f45b0ad64222222",
+    "name": "Triggering test job for a6298e4afedbf2cd461755ea6f45b0ad64222222",
     "trigger_specs": [
       {
         "builder_name": "linux_perf_tester",
@@ -269,9 +251,6 @@
           }
         }
       }
-    ],
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
@@ -280,9 +259,8 @@
       "-u",
       "\nimport sys\nimport time\ntime.sleep(20*60)\nsys.exit(0)\n"
     ],
-    "name": "Waiting for chromium@a6298e4afe.sleeping",
+    "name": "sleeping",
     "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@import time@@@",
@@ -302,10 +280,7 @@
       "ls",
       "gs://chrome-perf/bisect-results/a6298e4afedbf2cd461755ea6f45b0ad64222222-test.results"
     ],
-    "name": "Waiting for chromium@a6298e4afe.gsutil ls (2)",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
+    "name": "gsutil ls (4)"
   },
   {
     "cmd": [
@@ -318,30 +293,14 @@
       "cat",
       "gs://chrome-perf/bisect-results/a6298e4afedbf2cd461755ea6f45b0ad64222222-test.results"
     ],
-    "name": "Waiting for chromium@a6298e4afe.gsutil Get test results for build a6298e4afedbf2cd461755ea6f45b0ad64222222",
+    "name": "gsutil Get test results for build a6298e4afedbf2cd461755ea6f45b0ad64222222",
     "stdout": "/path/to/tmp/",
     "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
       "@@@SET_BUILD_PROPERTY@extra_result_code@[\"B4T_MISSING_METRIC\"]@@@"
     ]
   },
   {
     "cmd": [
-      "git",
-      "footers",
-      "--position",
-      "00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111"
-    ],
-    "cwd": "[TMP_BASE]/fake_checkout_tmp_1",
-    "name": "resolving hash 00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111",
-    "stdout": "/path/to/tmp/"
-  },
-  {
-    "cmd": [],
-    "name": "Waiting for chromium@00316c9ddf"
-  },
-  {
-    "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
@@ -351,14 +310,11 @@
       "ls",
       "gs://chrome-perf/Linux Builder/full-build-linux_00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111.zip"
     ],
-    "name": "Waiting for chromium@00316c9ddf.gsutil ls",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
+    "name": "gsutil ls (5)"
   },
   {
     "cmd": [],
-    "name": "Waiting for chromium@00316c9ddf.Triggering test job for 00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111",
+    "name": "Triggering test job for 00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111",
     "trigger_specs": [
       {
         "builder_name": "linux_perf_tester",
@@ -378,9 +334,6 @@
           }
         }
       }
-    ],
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
@@ -389,9 +342,8 @@
       "-u",
       "\nimport sys\nimport time\ntime.sleep(20*60)\nsys.exit(0)\n"
     ],
-    "name": "Waiting for chromium@00316c9ddf.sleeping",
+    "name": "sleeping (2)",
     "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@import time@@@",
@@ -411,10 +363,7 @@
       "ls",
       "gs://chrome-perf/bisect-results/00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111-test.results"
     ],
-    "name": "Waiting for chromium@00316c9ddf.gsutil ls (2)",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
+    "name": "gsutil ls (6)"
   },
   {
     "cmd": [
@@ -427,11 +376,8 @@
       "cat",
       "gs://chrome-perf/bisect-results/00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111-test.results"
     ],
-    "name": "Waiting for chromium@00316c9ddf.gsutil Get test results for build 00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111",
-    "stdout": "/path/to/tmp/",
-    "~followup_annotations": [
-      "@@@STEP_NEST_LEVEL@1@@@"
-    ]
+    "name": "gsutil Get test results for build 00316c9ddfb9d7b4e1ed2fff9fe6d964d2111111",
+    "stdout": "/path/to/tmp/"
   },
   {
     "name": "$result",