Recipes: make cwd default to slave_build

scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json

Index: scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json
diff --git a/scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json b/scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json
index 252fb83e5dface64e8ee319013310a4cb3cd8014..f83a48004497eea0d3c39992372213e01e24cf3a 100644
--- a/scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json
+++ b/scripts/slave/recipes/chromium_trybot_legacy.expected/full_tryserver_chromium_linux_linux_arm.json
@@ -28,6 +28,7 @@
       "src@HEAD",
       "--force"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -75,6 +76,7 @@
       "[SLAVE_BUILD]/src/testing/buildbot/chromium_arm.json",
       "/path/to/tmp/json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "read test spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: testing/buildbot/chromium_arm.json@@@",
@@ -126,6 +128,7 @@
       "--properties",
       "{\"buildername\": \"linux_arm\", \"buildnumber\": 571, \"mastername\": \"tryserver.chromium.linux\", \"slavename\": \"TestSlavename\", \"target_platform\": \"linux\"}"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "get compile targets for scripts",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{}@@@",
@@ -139,6 +142,7 @@
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "arm_float_abi=hard component=static_library dcheck_always_on=1 fastbuild=1 gomadir='[BUILD]/goma' target_arch=arm test_isolation_mode=prepare use_goma=1"
@@ -154,6 +158,7 @@
       "[SLAVE_BUILD]/src/out/Release",
       "--clean-isolated-files"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "clean isolated files"
   },
   {
@@ -176,6 +181,7 @@
       "browser_tests",
       "mojo_common_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile (with patch)"
   },
   {
@@ -199,6 +205,7 @@
       "/path/to/tmp/",
       "[SLAVE_BUILD]/src/out/Release/*.isolated.gen.json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "find isolated targets"
   },
   {
@@ -215,6 +222,7 @@
       "[SLAVE_BUILD]/src/out/Release/dummy_target_1.isolated.gen.json",
       "[SLAVE_BUILD]/src/out/Release/dummy_target_2.isolated.gen.json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "isolate tests",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",