Roll recipe dependencies (nontrivial).

scripts/slave/recipes/v8.expected/full_client_v8_V8_Fuzzer.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
       "--path",
       "[SLAVE_BUILD]/swarming.client",
       "--url",
       "https://chromium.googlesource.com/external/swarming.client.git"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "git setup (swarming_client)"
   },
   {
     "cmd": [
       "git",
       "retry",
       "fetch",
       "origin",
       "[dummy swarming client hash]"
     ],
@@ skipping 57 matching lines @@
       "@@@SET_BUILD_PROPERTY@got_revision@\"20123\"@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/swarming.client/swarming.py",
       "--version"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "swarming.py --version",
     "stdout": "/path/to/tmp/",
     "~followup_annotations": [
       "@@@STEP_TEXT@0.4.10@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
@@ skipping 50 matching lines @@
       "--tag",
       "slavename:TestSlavename",
       "--tag",
       "stepname:Fuzz on Ubuntu-12.04",
       "--idempotent",
       "[dummy hash for jsfunfuzz]",
       "--",
       "out/Debug/d8",
       "${ISOLATED_OUTDIR}/fuzz-results-54321.tar.bz2"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "[trigger] Fuzz on Ubuntu-12.04",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"base_task_name\": \"Fuzz/Ubuntu-12.04/[dummy has/V8 Fuzzer/571\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"tasks\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"Fuzz/Ubuntu-12.04/[dummy has/V8 Fuzzer/571\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"shard_index\": 0, @@@",
       "@@@STEP_LOG_LINE@json.output@      \"task_id\": \"10000\", @@@",
       "@@@STEP_LOG_LINE@json.output@      \"view_url\": \"https://chromium-swarm.appspot.com/user/task/10000\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }@@@",
@@ skipping 14 matching lines @@
       "--decorate",
       "--print-status-updates",
       "--shards",
       "1",
       "Fuzz/Ubuntu-12.04/[dummy has/V8 Fuzzer/571",
       "--task-summary-json",
       "/path/to/tmp/json",
       "--task-output-dir",
       "[TMP_BASE]/swarming_output_tmp_1"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "Fuzz on Ubuntu-12.04",
     "~followup_annotations": [
       "@@@STEP_TEXT@swarming pending 71s@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"shards\": [@@@",
       "@@@STEP_LOG_LINE@json.output@    {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"abandoned_ts\": null, @@@",
       "@@@STEP_LOG_LINE@json.output@      \"bot_id\": \"vm30\", @@@",
       "@@@STEP_LOG_LINE@json.output@      \"completed_ts\": \"2014-09-25T01:42:00.123\", @@@",
       "@@@STEP_LOG_LINE@json.output@      \"created_ts\": \"2014-09-25T01:41:00.123\", @@@",
@@ skipping 30 matching lines @@
       "@@@STEP_LOG_END@json.output@@@",
       "@@@STEP_LINK@shard #0 isolated out@blah@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]