Recipes: make cwd default to slave_build

scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json

Index: scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json
diff --git a/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json b/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json
index 924aef97db97e19e5187a638f9fc411b1e960fe9..61ec9d0410ea97c745944885f9a754f3846e790b 100644
--- a/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json
+++ b/scripts/slave/recipes/chromium_trybot.expected/full_tryserver_chromium_linux_android_clang_dbg_recipe.json
@@ -27,6 +27,7 @@
       "--revision",
       "src@HEAD"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -73,6 +74,7 @@
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "OS=android asan=1 clang=1 component=shared_library fastbuild=1 gomadir='[BUILD]/goma' run_findbugs=1 target_arch=arm use_allocator=none use_goma=1",
@@ -88,6 +90,7 @@
       "[SLAVE_BUILD]/src/testing/buildbot/chromium.linux.json",
       "/path/to/tmp/json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "read test spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: [SLAVE_BUILD]/src/testing/buildbot/chromium.linux.json@@@",
@@ -110,6 +113,7 @@
       "--properties",
       "{\"buildername\": \"android_clang_dbg_recipe\", \"buildnumber\": 571, \"mastername\": \"tryserver.chromium.linux\", \"slavename\": \"TestSlavename\", \"target_platform\": \"android\"}"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "get compile targets for scripts",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{}@@@",
@@ -139,6 +143,7 @@
       "[SLAVE_BUILD]/src/testing/buildbot/trybot_analyze_config.json",
       "/path/to/tmp/json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "read filter exclusion spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: 'testing/buildbot/trybot_analyze_config.json'@@@",
@@ -161,6 +166,7 @@
       "-u",
       "import sys; sys.exit(0)"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "analyze",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@excluded_files@foo.cc (regex = 'f.*')@@@",
@@ -181,6 +187,7 @@
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -193,6 +200,7 @@
       "[SLAVE_BUILD]/src/out/build_product.zip",
       "[SLAVE_BUILD]/src"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "clean local files",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -217,6 +225,7 @@
       "[SLAVE_BUILD]/src",
       "src"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "tree truth steps"
   },
   {
@@ -236,6 +245,7 @@
       "[BUILD]/goma",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },