Roll recipe dependencies (nontrivial).

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json
index fd8e6e216bfb7b8b1f5dbefb944d13619df3a4b9..76c78e109be0f24b03a3d30e2ed4764060e61263 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win64_debug__gn_.json
@@ -24,7 +24,6 @@
       "src@12345",
       "--output_manifest"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -63,7 +62,6 @@
       "RECIPE_MODULE[build::webrtc]\\resources\\cleanup_files.py",
       "[SLAVE_BUILD]\\src\\out"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "clean test output files"
   },
   {
@@ -75,7 +73,6 @@
       "python",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\cleanup_temp.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -85,7 +82,6 @@
       "RECIPE_PACKAGE_REPO[depot_tools]\\gclient.py",
       "runhooks"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json",
       "GYP_CHROMIUM_NO_ACTION": "1",
@@ -104,7 +100,6 @@
       "//out/Debug_x64",
       "--args=ffmpeg_branding=\"Chrome\" rtc_use_h264=true is_debug=true target_cpu=\"x64\" use_goma=true goma_dir=\"[BUILD]\\goma\""
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "gn"
   },
   {
@@ -138,7 +133,6 @@
       "--",
       "all"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "C:\\creds\\service_accounts\\service-account-goma-client.json"
     },