Revert "build: roll infra_paths changes"

scripts/slave/recipe_modules/amp/example.expected/bad_device_data_from_trigger.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[ROOT]/b/depot_tools/gsutil.py",
+      "[DEPOT_TOOLS]/gsutil.py",
       "----",
       "cp",
       "gs://chrome-amp-keys/main_pool/api_key",
-      "[ROOT]/b/build/site_config/.amp_main_pool_key"
+      "[BUILD]/site_config/.amp_main_pool_key"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "gsutil download amp api key"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[ROOT]/b/depot_tools/gsutil.py",
+      "[DEPOT_TOOLS]/gsutil.py",
       "----",
       "cp",
       "gs://chrome-amp-keys/main_pool/api_secret",
-      "[ROOT]/b/build/site_config/.amp_main_pool_secret"
+      "[BUILD]/site_config/.amp_main_pool_secret"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "gsutil download amp api secret"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "[CWD]/src/build/android/test_runner.py",
+      "[SLAVE_BUILD]/src/build/android/test_runner.py",
       "gtest",
       "-s",
       "example_gtest_suite",
       "--enable-platform-mode",
       "-e",
       "remote_device",
       "--api-key-file",
-      "[ROOT]/b/build/site_config/.amp_main_pool_key",
+      "[BUILD]/site_config/.amp_main_pool_key",
       "--api-secret-file",
-      "[ROOT]/b/build/site_config/.amp_main_pool_secret",
+      "[BUILD]/site_config/.amp_main_pool_secret",
       "--api-address",
       "127.0.0.1",
       "--api-port",
       "80",
       "--api-protocol",
       "http",
       "--device-type",
       "Android",
       "--remote-device",
       "SampleDevice",
       "--remote-device-os",
       "SampleDeviceOS",
       "--trigger",
       "/path/to/tmp/json",
       "--verbose"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
-      "CHROMIUM_OUTPUT_DIR": "[CWD]/src/out/Debug"
+      "CHROMIUM_OUTPUT_DIR": "[SLAVE_BUILD]/src/out/Debug"
     },
     "name": "[trigger] example_gtest_suite",
     "~followup_annotations": [
       "@@@STEP_TEXT@unable to find device info@@@",
       "@@@STEP_LOG_LINE@json.output@{}@@@",
       "@@@STEP_LOG_END@json.output@@@",
       "@@@STEP_LOG_LINE@trigger_data@{}@@@",
       "@@@STEP_LOG_END@trigger_data@@@",
       "@@@STEP_WARNINGS@@@"
     ]
   },
   {
     "name": "$result",
     "reason": "test_run_id not found in trigger_data json",
     "status_code": 1
   }
 ]