Roll recipe dependencies (nontrivial).

scripts/slave/recipes/client.drmemory.recipe_autogen.expected/linux_cr_builder_clobber.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "client.drmemory",
       "--builder",
       "linux-cr-builder",
       "--slave",
       "TestSlave",
       "--spec",
       "cache_dir = '[GIT_CACHE]'\nsolutions = [{'custom_deps': {'src/third_party/WebKit/LayoutTests': None}, 'custom_vars': {'googlecode_url': 'http://%s.googlecode.com/svn', 'llvm_url': 'http://llvm.org/svn/llvm-project', 'nacl_trunk': 'http://src.chromium.org/native_client/trunk', 'sourceforge_url': 'https://svn.code.sf.net/p/%(repo)s/code', 'webkit_trunk': 'http://src.chromium.org/blink/trunk'}, 'deps_file': '.DEPS.git', 'managed': True, 'name': 'src', 'url': 'https://chromium.googlesource.com/chromium/src.git'}]",
       "--root",
       "src",
       "--revision_mapping_file",
       "{\"src\": \"got_revision\", \"src/third_party/WebKit\": \"got_webkit_revision\", \"src/tools/swarming_client\": \"got_swarming_client_revision\", \"src/v8\": \"got_v8_revision\"}",
       "--git-cache-dir",
       "[GIT_CACHE]",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "src@123456789abcdef",
       "--force",
       "--output_manifest"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src\": \"123456789abcdef\"@@@",
@@ skipping 41 matching lines @@
       "@@@SET_BUILD_PROPERTY@got_swarming_client_revision_cp@\"refs/heads/master@{#276089}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_v8_revision_cp@\"refs/heads/master@{#43426}\"@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/runhooks_wrapper.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "env": {
       "CHROMIUM_GYP_SYNTAX_CHECK": "1",
       "DEPOT_TOOLS_UPDATE": "0",
       "GYP_DEFINES": "build_for_tool=drmemory component=shared_library",
       "GYP_GENERATORS": "ninja",
       "LANDMINES_VERBOSE": "1"
     },
     "name": "gclient runhooks wrapper"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_PACKAGE_REPO[build]/scripts/tools/runit.py",
       "--show-path",
       "python",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/cleanup_temp.py"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/compile.py",
       "--target",
       "Release",
       "--build-tool=ninja",
       "--compiler=goma",
       "content_shell",
       "base_unittests",
       "browser_tests",
       "crypto_unittests",
       "ipc_tests",
       "media_unittests",
       "net_unittests",
       "printing_unittests",
       "remoting_unittests",
       "sql_unittests",
       "unit_tests",
       "url_unittests",
       "--clobber"
     ],
-    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]