Revert "build: roll infra_paths changes"

scripts/slave/recipes/infra/infra_continuous.expected/infra_win.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]\\resources\\bot_update.py",
       "--master",
       "chromium.infra",
       "--builder",
       "infra-continuous",
       "--slave",
       "TestSlavename",
       "--spec",
-      "cache_dir = '[ROOT]\\\\b\\\\build\\\\slave\\\\cache_dir'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'infra', 'url': 'https://chromium.googlesource.com/infra/infra.git'}]",
+      "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'infra', 'url': 'https://chromium.googlesource.com/infra/infra.git'}]",
       "--root",
       "infra",
       "--revision_mapping_file",
       "{\"infra\": \"got_revision\"}",
       "--git-cache-dir",
-      "[ROOT]\\b\\build\\slave\\cache_dir",
+      "[GIT_CACHE]",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "infra@c14d891d44f0afff64e56ed7c9702df1d807b1ee",
       "--force",
       "--output_manifest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
     },
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"infra\": \"c14d891d44f0afff64e56ed7c9702df1d807b1ee\"@@@",
@@ skipping 18 matching lines @@
       "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#197293}\"@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[depot_tools]\\gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "test.py",
       "test"
     ],
-    "cwd": "[CWD]\\infra",
+    "cwd": "[SLAVE_BUILD]\\infra",
     "name": "infra python tests"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]\\infra\\go\\env.py",
+      "[SLAVE_BUILD]\\infra\\go\\env.py",
       "go",
       "version"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "go third parties"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]\\infra\\go\\env.py",
+      "[SLAVE_BUILD]\\infra\\go\\env.py",
       "python",
-      "[CWD]\\infra\\go\\test.py"
+      "[SLAVE_BUILD]\\infra\\go\\test.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "infra go tests"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]\\infra\\build\\build.py",
+      "[SLAVE_BUILD]\\infra\\build\\build.py",
       "--builder",
       "infra-continuous"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cipd - build packages"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]\\infra\\build\\test_packages.py"
+      "[SLAVE_BUILD]\\infra\\build\\test_packages.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cipd - test packages integrity"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]\\infra\\build\\build.py",
+      "[SLAVE_BUILD]\\infra\\build\\build.py",
       "--no-rebuild",
       "--upload",
       "--service-account-json",
       "C:\\creds\\service_accounts\\service-account-cipd-builder.json",
       "--json-output",
       "/path/to/tmp/json",
       "--builder",
       "infra-continuous",
       "--tags",
       "buildbot_build:chromium.infra/infra-continuous/123",
       "git_repository:https://chromium.googlesource.com/infra/infra",
       "git_revision:5e03a58dc0850e5137a8ebbce29610670c756aed"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cipd - upload packages",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
       "@@@STEP_LOG_END@json.output (invalid)@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]