Revert "build: roll infra_paths changes"

scripts/slave/recipes/run_presubmit.expected/build_internal_scripts_slave.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "tryserver.chromium.linux",
       "--builder",
       "build_internal_scripts_slave_presubmit",
       "--slave",
       "TestSlavename",
       "--spec",
-      "cache_dir = '[ROOT]/b/build/slave/cache_dir'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'build_internal/scripts/slave', 'url': 'https://chrome-internal.googlesource.com/chrome/tools/build_limited/scripts/slave.git'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'build', 'url': 'https://chromium.googlesource.com/chromium/tools/build.git'}]",
+      "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'build_internal/scripts/slave', 'url': 'https://chrome-internal.googlesource.com/chrome/tools/build_limited/scripts/slave.git'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'build', 'url': 'https://chromium.googlesource.com/chromium/tools/build.git'}]",
       "--root",
       "build_internal/scripts/slave",
       "--revision_mapping_file",
       "{\"build\": \"got_build_revision\", \"build_internal/scripts/slave\": \"got_revision\"}",
       "--git-cache-dir",
-      "[ROOT]/b/build/slave/cache_dir",
+      "[GIT_CACHE]",
       "--issue",
       "12853011",
       "--patchset",
       "1",
       "--rietveld_server",
       "https://codereview.chromium.org",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "build_internal/scripts/slave@HEAD",
       "--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@    \"build_internal/scripts/slave\": \"HEAD\"@@@",
@@ skipping 31 matching lines @@
       "git",
       "-c",
       "user.email=commit-bot@chromium.org",
       "-c",
       "user.name=The Commit Bot",
       "commit",
       "-a",
       "-m",
       "Committed patch"
     ],
-    "cwd": "[CWD]/build_internal/scripts/slave",
+    "cwd": "[SLAVE_BUILD]/build_internal/scripts/slave",
     "name": "commit git patch"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[depot_tools]/presubmit_support.py",
       "--issue",
       "12853011",
       "--patchset",
       "1",
       "--rietveld_url",
       "https://codereview.chromium.org",
       "--rietveld_fetch",
       "--rietveld_email",
       "",
       "--root",
-      "[CWD]/build_internal/scripts/slave",
+      "[SLAVE_BUILD]/build_internal/scripts/slave",
       "--commit",
       "--verbose",
       "--verbose",
       "--skip_canned",
       "CheckRietveldTryJobExecution",
       "--skip_canned",
       "CheckTreeIsOpen",
       "--skip_canned",
       "CheckBuildbotPendingBuilds",
       "--upstream",
       "3faf12c8131337a86e669cc1a1bd8d2dfe8cc86d"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
       "PYTHONPATH": ""
     },
     "name": "presubmit"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]