webrtc: use correct cwd for running tests

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

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_syzyasan.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_syzyasan.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_syzyasan.json
index 1ff7ddf1072f8ba2fab1e4af2b169fc13524a00c..509d1d7e87c818468badc6da1f5c09d337021fbc 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_syzyasan.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_syzyasan.json
@@ -239,6 +239,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\audio_decoder_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "audio_decoder_unittests"
   },
   {
@@ -263,6 +264,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\common_audio_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "common_audio_unittests"
   },
   {
@@ -287,6 +289,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\common_video_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "common_video_unittests"
   },
   {
@@ -311,6 +314,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\modules_tests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "modules_tests"
   },
   {
@@ -335,6 +339,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\modules_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "modules_unittests"
   },
   {
@@ -359,6 +364,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\peerconnection_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "peerconnection_unittests"
   },
   {
@@ -383,6 +389,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\rtc_media_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "rtc_media_unittests"
   },
   {
@@ -407,6 +414,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\rtc_pc_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "rtc_pc_unittests"
   },
   {
@@ -431,6 +439,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\rtc_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "rtc_unittests"
   },
   {
@@ -455,6 +464,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\system_wrappers_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "system_wrappers_unittests"
   },
   {
@@ -479,6 +489,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\test_support_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "test_support_unittests"
   },
   {
@@ -503,6 +514,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\tools_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "tools_unittests"
   },
   {
@@ -527,6 +539,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\video_engine_tests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "video_engine_tests"
   },
   {
@@ -551,6 +564,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\voice_engine_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "voice_engine_unittests"
   },
   {
@@ -575,6 +589,7 @@
       "[BUILDER_CACHE]\\Win_SyzyASan\\src\\out\\Release\\xmllite_xmpp_unittests",
       "--"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "xmllite_xmpp_unittests"
   },
   {
@@ -601,6 +616,7 @@
       "--revision=f27fede2220bcd326aee3e86ddfd4ebd0fe58cb9",
       "webrtc_nonparallel_tests.exe"
     ],
+    "cwd": "[BUILDER_CACHE]\\Win_SyzyASan",
     "name": "webrtc_nonparallel_tests"
   },
   {