Roll recipe dependencies (nontrivial).

scripts/slave/recipes/webrtc/ios.expected/trybot.json

Index: scripts/slave/recipes/webrtc/ios.expected/trybot.json
diff --git a/scripts/slave/recipes/webrtc/ios.expected/trybot.json b/scripts/slave/recipes/webrtc/ios.expected/trybot.json
index a04a113ec88a0d4c63dea4264d0f2fb703aeb4ff..6c1de4b9d62413411c1aea01284cbe9242e499ab 100644
--- a/scripts/slave/recipes/webrtc/ios.expected/trybot.json
+++ b/scripts/slave/recipes/webrtc/ios.expected/trybot.json
@@ -5,7 +5,6 @@
       "--json-file",
       "/path/to/tmp/json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "host and tools info",
     "~followup_annotations": [
       "@@@STEP_TEXT@<br />OS X 1.2.3, Xcode 6.7.8 (5D342509a)@@@",
@@ -47,7 +46,6 @@
       "src@HEAD",
       "--output_manifest"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -68,7 +66,6 @@
       "[SLAVE_BUILD]/src/webrtc/build/ios/chromium.fake/ios.json",
       "/path/to/tmp/json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "read build config",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
@@ -93,7 +90,6 @@
       "-e",
       "{\n  \"GYP_DEFINES\": {\n    \"OS\": \"ios\", \n    \"component\": \"static_library\", \n    \"fake gyp define 1\": \"fake value 1\", \n    \"fake gyp define 2\": \"fake value 2\", \n    \"use_goma\": \"1\"\n  }, \n  \"additional_compile_targets\": [\n    \"All\"\n  ], \n  \"compiler\": \"ninja\", \n  \"configuration\": \"Release\", \n  \"env\": {}, \n  \"gn_args\": [], \n  \"mb_type\": null, \n  \"sdk\": \"iphoneos8.0\", \n  \"tests\": [], \n  \"triggered bots\": {}, \n  \"use_analyze\": \"false\", \n  \"xcode version\": \"fake xcode version\"\n}"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "finalize build config"
   },
   {
@@ -104,7 +100,6 @@
       "--version",
       "fake xcode version"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "find xcode",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{}@@@",
@@ -118,7 +113,6 @@
       "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
       "runhooks"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_CROSSCOMPILE": "1",
       "GYP_DEFINES": "use_goma=1 fake gyp define 1=fake value 1 fake gyp define 2=fake value 2 component=static_library OS=ios",
@@ -142,7 +136,6 @@
       "--output-json",
       "/path/to/tmp/json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },