Recipes: make cwd default to slave_build

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json
index 9401ab38d88bc938176f8962469673af106692d9..f251486d0671278262c597861a938cafeb5cd969 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux_msan.json
@@ -21,6 +21,7 @@
       "--revision",
       "src@12345"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -47,6 +48,7 @@
       "RECIPE_MODULE[webrtc]/resources/cleanup_files.py",
       "[SLAVE_BUILD]/src/out"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "clean test output files"
   },
   {
@@ -55,6 +57,7 @@
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -64,6 +67,7 @@
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_DEFINES": "clang=1 component=static_library dcheck_always_on=1 gomadir='[BUILD]/goma' msan=1 msan_track_origins=2 target_arch=x64 use_goma=1 use_prebuilt_instrumented_libraries=1"
     },
@@ -87,6 +91,7 @@
       "--",
       "All"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
@@ -113,6 +118,7 @@
       "--enable-msan",
       "audio_decoder_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "audio_decoder_unittests"
   },
   {
@@ -139,6 +145,7 @@
       "--enable-msan",
       "common_audio_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "common_audio_unittests"
   },
   {
@@ -165,6 +172,7 @@
       "--enable-msan",
       "common_video_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "common_video_unittests"
   },
   {
@@ -191,6 +199,7 @@
       "--enable-msan",
       "libjingle_media_unittest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_media_unittest"
   },
   {
@@ -217,6 +226,7 @@
       "--enable-msan",
       "libjingle_p2p_unittest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_p2p_unittest"
   },
   {
@@ -243,6 +253,7 @@
       "--enable-msan",
       "libjingle_peerconnection_unittest"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_peerconnection_unittest"
   },
   {
@@ -269,6 +280,7 @@
       "--enable-msan",
       "modules_tests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "modules_tests"
   },
   {
@@ -295,6 +307,7 @@
       "--enable-msan",
       "modules_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "modules_unittests"
   },
   {
@@ -321,6 +334,7 @@
       "--enable-msan",
       "rtc_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "rtc_unittests"
   },
   {
@@ -347,6 +361,7 @@
       "--enable-msan",
       "system_wrappers_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "system_wrappers_unittests"
   },
   {
@@ -373,6 +388,7 @@
       "--enable-msan",
       "test_support_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "test_support_unittests"
   },
   {
@@ -399,6 +415,7 @@
       "--enable-msan",
       "tools_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "tools_unittests"
   },
   {
@@ -425,6 +442,7 @@
       "--enable-msan",
       "video_engine_core_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "video_engine_core_unittests"
   },
   {
@@ -451,6 +469,7 @@
       "--enable-msan",
       "video_engine_tests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "video_engine_tests"
   },
   {
@@ -477,6 +496,7 @@
       "--enable-msan",
       "voice_engine_unittests"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "voice_engine_unittests"
   }
 ]