Recipes: make cwd default to slave_build

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.json

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.json
index 57e33b2ab70a8beeee68262e40da7c3587b6c8c8..efc26bb88533180e6d41d3bc6e50af439c853bc2 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_debug.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": "component=shared_library dcheck_always_on=1 gomadir='[BUILD]/goma' target_arch=x64 use_goma=1"
     },
@@ -87,6 +91,7 @@
       "--",
       "All"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
@@ -110,6 +115,7 @@
       "[SLAVE_BUILD]/src/out/Debug/audio_decoder_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "audio_decoder_unittests"
   },
   {
@@ -133,6 +139,7 @@
       "[SLAVE_BUILD]/src/out/Debug/common_audio_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "common_audio_unittests"
   },
   {
@@ -156,6 +163,7 @@
       "[SLAVE_BUILD]/src/out/Debug/common_video_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "common_video_unittests"
   },
   {
@@ -179,6 +187,7 @@
       "[SLAVE_BUILD]/src/out/Debug/libjingle_media_unittest",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_media_unittest"
   },
   {
@@ -202,6 +211,7 @@
       "[SLAVE_BUILD]/src/out/Debug/libjingle_p2p_unittest",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_p2p_unittest"
   },
   {
@@ -225,6 +235,7 @@
       "[SLAVE_BUILD]/src/out/Debug/libjingle_peerconnection_unittest",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "libjingle_peerconnection_unittest"
   },
   {
@@ -248,6 +259,7 @@
       "[SLAVE_BUILD]/src/out/Debug/modules_tests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "modules_tests"
   },
   {
@@ -271,6 +283,7 @@
       "[SLAVE_BUILD]/src/out/Debug/modules_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "modules_unittests"
   },
   {
@@ -294,6 +307,7 @@
       "[SLAVE_BUILD]/src/out/Debug/rtc_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "rtc_unittests"
   },
   {
@@ -317,6 +331,7 @@
       "[SLAVE_BUILD]/src/out/Debug/system_wrappers_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "system_wrappers_unittests"
   },
   {
@@ -340,6 +355,7 @@
       "[SLAVE_BUILD]/src/out/Debug/test_support_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "test_support_unittests"
   },
   {
@@ -363,6 +379,7 @@
       "[SLAVE_BUILD]/src/out/Debug/tools_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "tools_unittests"
   },
   {
@@ -386,6 +403,7 @@
       "[SLAVE_BUILD]/src/out/Debug/video_engine_core_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "video_engine_core_unittests"
   },
   {
@@ -409,6 +427,7 @@
       "[SLAVE_BUILD]/src/out/Debug/video_engine_tests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "video_engine_tests"
   },
   {
@@ -432,6 +451,7 @@
       "[SLAVE_BUILD]/src/out/Debug/voice_engine_unittests",
       "--"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "voice_engine_unittests"
   }
 ]