Roll recipe dependencies (nontrivial).

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

Index: scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_linux_rel.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_linux_rel.json b/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_linux_rel.json
index 4742d9647af9fdfcfe01fbae2ccd7241cac00282..6010f0ac25b8e3d358c389d0bb359f56006d0138 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_linux_rel.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/tryserver_webrtc_linux_rel.json
@@ -30,7 +30,6 @@
       "src@12345",
       "--output_manifest"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -69,7 +68,6 @@
       "RECIPE_MODULE[build::webrtc]/resources/cleanup_files.py",
       "[SLAVE_BUILD]/src/out"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "clean test output files"
   },
   {
@@ -81,7 +79,6 @@
       "python",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/cleanup_temp.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -91,7 +88,6 @@
       "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
       "runhooks"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
       "GYP_DEFINES": "component=static_library dcheck_always_on=1 fastbuild=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' rtc_use_264=1 target_arch=x64 use_goma=1",
@@ -132,7 +128,6 @@
       "--",
       "All"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
@@ -165,7 +160,6 @@
       "[SLAVE_BUILD]/src/out/Release/audio_decoder_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "audio_decoder_unittests"
   },
   {
@@ -191,7 +185,6 @@
       "[SLAVE_BUILD]/src/out/Release/common_audio_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "common_audio_unittests"
   },
   {
@@ -217,7 +210,6 @@
       "[SLAVE_BUILD]/src/out/Release/common_video_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "common_video_unittests"
   },
   {
@@ -243,7 +235,6 @@
       "[SLAVE_BUILD]/src/out/Release/modules_tests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "modules_tests"
   },
   {
@@ -269,7 +260,6 @@
       "[SLAVE_BUILD]/src/out/Release/modules_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "modules_unittests"
   },
   {
@@ -295,7 +285,6 @@
       "[SLAVE_BUILD]/src/out/Release/peerconnection_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "peerconnection_unittests"
   },
   {
@@ -321,7 +310,6 @@
       "[SLAVE_BUILD]/src/out/Release/rtc_media_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "rtc_media_unittests"
   },
   {
@@ -347,7 +335,6 @@
       "[SLAVE_BUILD]/src/out/Release/rtc_pc_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "rtc_pc_unittests"
   },
   {
@@ -373,7 +360,6 @@
       "[SLAVE_BUILD]/src/out/Release/rtc_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "rtc_unittests"
   },
   {
@@ -399,7 +385,6 @@
       "[SLAVE_BUILD]/src/out/Release/system_wrappers_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "system_wrappers_unittests"
   },
   {
@@ -425,7 +410,6 @@
       "[SLAVE_BUILD]/src/out/Release/test_support_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "test_support_unittests"
   },
   {
@@ -451,7 +435,6 @@
       "[SLAVE_BUILD]/src/out/Release/tools_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "tools_unittests"
   },
   {
@@ -477,7 +460,6 @@
       "[SLAVE_BUILD]/src/out/Release/video_engine_tests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "video_engine_tests"
   },
   {
@@ -503,7 +485,6 @@
       "[SLAVE_BUILD]/src/out/Release/voice_engine_unittests",
       "--"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "voice_engine_unittests"
   },
   {
@@ -528,7 +509,6 @@
       "--revision=f27fede2220bcd326aee3e86ddfd4ebd0fe58cb9",
       "webrtc_nonparallel_tests"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "webrtc_nonparallel_tests"
   },
   {