Recipes: make cwd default to slave_build

scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json b/scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json
index bccfd7b4f3edf067d39d6b13ed1c5c46ce5da04f..15f3f46e172f044b8a800819b5972be1cbc56cc0 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_perf_Win_Builder.json
@@ -5,6 +5,7 @@
       "-u",
       "[BUILD]\\scripts\\slave\\kill_processes.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "taskkill"
   },
   {
@@ -29,6 +30,7 @@
       "--revision",
       "src@HEAD"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -75,6 +77,7 @@
       "[DEPOT_TOOLS]\\gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_DEFINES": "branding=Chrome buildtype=Official chromium_win_pch=0 component=static_library fastbuild=1 gomadir='[BUILD]\\goma' target_arch=ia32 use_goma=1"
     },
@@ -86,6 +89,7 @@
       "-u",
       "[BUILD]\\scripts\\slave\\cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -111,6 +115,7 @@
       "chromium_builder_perf",
       "crash_service"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
@@ -130,6 +135,7 @@
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"buildername\": \"Win Builder\", \"buildnumber\": 571, \"mastername\": \"chromium.perf\", \"parent_buildername\": null, \"recipe\": \"chromium\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "package build"
   }
 ]