Roll recipe dependencies (nontrivial).

scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json

Index: scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json
diff --git a/scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json b/scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json
index 8bfc54c7cf0837a811f4da5c491eeacb4bdcc07e..ff109d4f81c06e78699d353a5c234848e59bd63e 100644
--- a/scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json
+++ b/scripts/slave/recipes/chromium.expected/chromium_webkit_parent_revision_chromium.json
@@ -5,7 +5,6 @@
       "-u",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\kill_processes.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "taskkill"
   },
   {
@@ -36,7 +35,6 @@
       "--force",
       "--output_manifest"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s;RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -111,7 +109,6 @@
   },
   {
     "cmd": [],
-    "cwd": "[SLAVE_BUILD]",
     "name": "ensure_goma"
   },
   {
@@ -126,7 +123,6 @@
       "--json-output",
       "/path/to/tmp/json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "ensure_goma.install cipd",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@",
@@ -151,7 +147,6 @@
       "--service-account-json",
       "C:\\creds\\service_accounts\\service-account-goma-client.json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "ensure_goma.ensure_installed",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@",
@@ -173,7 +168,6 @@
       "[SLAVE_BUILD]\\src\\tools\\swarming_client\\swarming.py",
       "--version"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "swarming.py --version",
     "stdout": "/path/to/tmp/",
     "~followup_annotations": [
@@ -187,7 +181,6 @@
       "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",
@@ -211,7 +204,6 @@
       "--properties",
       "{\"buildername\": \"WebKit Win7\", \"buildnumber\": 571, \"mastername\": \"chromium.webkit\", \"slavename\": \"TestSlavename\", \"target_platform\": \"win\"}"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "get compile targets for scripts",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{}@@@",
@@ -226,7 +218,6 @@
       "[SLAVE_BUILD]\\src\\testing\\buildbot\\chromium.webkit.json",
       "/path/to/tmp/json"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "read test spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: [SLAVE_BUILD]\\src\\testing\\buildbot\\chromium.webkit.json@@@",
@@ -243,7 +234,6 @@
       "python",
       "RECIPE_PACKAGE_REPO[build]\\scripts\\slave\\cleanup_temp.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
@@ -253,7 +243,6 @@
       "\nimport os, sys\nfrom common import chromium_utils # Error? See https://crbug.com/584783.\n\n\nif os.path.exists(sys.argv[1]):\n  chromium_utils.RemoveDirectory(sys.argv[1])\n",
       "[SLAVE_BUILD]\\src\\out\\Release"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "rmtree build directory",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ -285,7 +274,6 @@
       "--build-number",
       "571"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "extract build"
   },
   {
@@ -322,7 +310,6 @@
       "--step-name",
       "webkit_tests"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "webkit_tests",
     "~followup_annotations": [
       "@@@STEP_TEXT@<br/>Total executed: 9001<br/>@@@"
@@ -344,7 +331,6 @@
       "--gs-bucket",
       "gs://chromium-layout-test-archives"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "archive_webkit_tests_results",
     "~followup_annotations": [
       "@@@STEP_LINK@layout_test_results@https://storage.googleapis.com/chromium-layout-test-archives/WebKit_Win7/571/layout-test-results/results.html@@@",
@@ -359,7 +345,6 @@
       "--target",
       "Release"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "process_dumps"
   },
   {