Followup to https://codereview.chromium.org/1849113003

scripts/slave/recipes/infra/depot_tools_builder.expected/basic.json

 [
   {
+    "cmd": [],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "clean workspace"
+  },
+  {
     "cmd": [
       "python",
       "-u",
       "\nimport os, sys\nfrom common import chromium_utils # Error? See https://crbug.com/584783.\n\n\nif os.path.exists(sys.argv[1]):\n  chromium_utils.RemoveDirectory(sys.argv[1])\n",
       "[SLAVE_BUILD]/depot_tools"
     ],
     "cwd": "[SLAVE_BUILD]",
-    "name": "rmtree rm depot_tools",
+    "name": "clean workspace.rmtree rm depot_tools",
     "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@import os, sys@@@",
       "@@@STEP_LOG_LINE@python.inline@from common import chromium_utils # Error? See https://crbug.com/584783.@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@if os.path.exists(sys.argv[1]):@@@",
       "@@@STEP_LOG_LINE@python.inline@  chromium_utils.RemoveDirectory(sys.argv[1])@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
       "[SLAVE_BUILD]/depot_tools.zip"
     ],
     "cwd": "[SLAVE_BUILD]",
-    "name": "rm depot_tools.zip",
+    "name": "clean workspace.rm depot_tools.zip",
     "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@import os@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "mkdir",
       "[SLAVE_BUILD]/depot_tools"
     ],
     "cwd": "[SLAVE_BUILD]",
-    "name": "mk depot_tools"
+    "name": "clean workspace.mk depot_tools",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "clone + checkout"
   },
   {
     "cmd": [
       "git",
       "clone",
       "--single-branch",
       "-n",
       "https://chromium.googlesource.com/chromium/tools/depot_tools.git",
       "[SLAVE_BUILD]/depot_tools"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "git clone"
+    "name": "clone + checkout.git clone",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "config",
       "core.autocrlf",
       "false"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "set autocrlf"
+    "name": "clone + checkout.set autocrlf",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "config",
       "core.filemode",
       "false"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "set filemode"
+    "name": "clone + checkout.set filemode",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "config",
       "core.symlinks",
       "false"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "set symlinks"
+    "name": "clone + checkout.set symlinks",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "checkout",
       "origin/master"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "git checkout"
+    "name": "clone + checkout.git checkout",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "reset",
       "--hard",
       "deadbeef"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "git reset"
+    "name": "clone + checkout.git reset",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "reflog",
       "expire",
       "--all"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "git reflog"
+    "name": "clone + checkout.git reflog",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "git",
       "gc",
       "--aggressive",
       "--prune=all"
     ],
     "cwd": "[SLAVE_BUILD]/depot_tools",
-    "name": "git gc"
+    "name": "clone + checkout.git gc",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::zip]/resources/zip.py"
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "zip it up",
     "stdin": "{\"entries\": [{\"path\": \"[SLAVE_BUILD]/depot_tools\", \"type\": \"dir\"}], \"output\": \"[SLAVE_BUILD]/depot_tools.zip\", \"root\": \"[SLAVE_BUILD]/depot_tools\"}"
@@ skipping 37 matching lines @@
     ],
     "cwd": "[SLAVE_BUILD]",
     "name": "gsutil upload docs"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]