Recipes: make cwd default to slave_build

scripts/slave/recipes/chromium.expected/full_client_v8_Chrome_Win7_Perf.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\kill_processes.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "taskkill"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\bot_update.py",
       "--master",
       "client.v8",
       "--builder",
       "Chrome Win7 Perf",
       "--slave",
       "TestSlavename",
       "--spec",
       "cache_dir = None\nsolutions = [{'custom_deps': {'src/chrome/test/data/pdf_private': None, 'src/third_party/WebKit/LayoutTests': None, 'src/tools/valgrind': None}, 'custom_vars': {'googlecode_url': 'svn://svn-mirror.golo.chromium.org/%s', 'llvm_url': 'svn://svn-mirror.golo.chromium.org/llvm-project', 'nacl_trunk': 'svn://svn-mirror.golo.chromium.org/native_client/trunk', 'sourceforge_url': 'svn://svn-mirror.golo.chromium.org/%(repo)s', 'v8_branch': 'branches/bleeding_edge', 'webkit_trunk': 'svn://svn-mirror.golo.chromium.org/blink/trunk'}, 'deps_file': 'DEPS', 'managed': False, 'name': 'src', 'safesync_url': 'https://build.chromium.org/p/chromium/lkcr-status/lkgr', 'url': 'svn://svn-mirror.golo.chromium.org/chrome/trunk/src'}, {'custom_deps': {'src/chrome/test/data/firefox2_profile/searchplugins': None, 'src/chrome/test/data/firefox2_searchplugins': None, 'src/chrome/test/data/firefox3_profile/searchplugins': None, 'src/chrome/test/data/firefox3_searchplugins': None, 'src/chrome/test/data/osdd': None, 'src/chrome/test/data/perf/frame_rate/private': None, 'src/chrome/test/data/plugin': None, 'src/chrome/test/data/ssl/certs': None, 'src/data/autodiscovery': None, 'src/data/esctf': None, 'src/data/mach_ports': None, 'src/data/memory_test': None, 'src/data/mozilla_js_tests': None, 'src/data/selenium_core': None, 'src/data/tab_switching': None, 'src/tools/grit/grit/test/data': None, 'src/webkit/data/bmp_decoder': None, 'src/webkit/data/ico_decoder': None, 'src/webkit/data/test_shell/plugins': None, 'src/webkit/data/xbm_decoder': None}, 'deps_file': 'DEPS', 'managed': False, 'name': 'src-internal', 'url': 'svn://svn-mirror.golo.chromium.org/chrome-internal/trunk/src-internal'}]",
       "--root",
       "src",
       "--revision_mapping_file",
       "{\"src/native_client\": \"got_nacl_revision\", \"src/third_party/WebKit\": \"got_webkit_revision\", \"src/third_party/webrtc\": \"got_webrtc_revision\", \"src/tools/swarming_client\": \"got_swarming_client_revision\", \"src/v8\": \"got_revision\"}",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "src@origin/lkcr",
       "--revision",
       "src/v8@22135"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "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@  \"patch_failure\": false, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src\", @@@",
       "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_nacl_revision\": \"d998e125e8253980d76e269b7982aeeefc1b9b50\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"got_nacl_revision_cp\": \"refs/heads/master@{#274981}\", @@@",
@@ skipping 22 matching lines @@
       "@@@SET_BUILD_PROPERTY@got_webrtc_revision_cp@\"refs/heads/master@{#120644}\"@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]\\gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_DEFINES": "branding=Chrome buildtype=Official chromium_win_pch=0 component=static_library fastbuild=1 gomadir='[BUILD]\\goma' target_arch=ia32 use_goma=1"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup_temp"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\compile.py",
       "--target",
       "Release",
       "--src-dir",
       "[SLAVE_BUILD]\\src",
       "--build-tool",
       "ninja",
       "--compiler",
       "goma",
       "--mode",
       "official",
       "--goma-dir",
       "[BUILD]\\goma",
       "--",
       "chromium_builder_perf",
       "crash_service"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\chromium\\run_crash_handler.py",
       "--target",
       "Release"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "start_crash_service"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]\\src\\tools\\perf\\run_benchmark",
       "list",
       "--browser",
       "release",
       "--json-output",
       "/path/to/tmp/json",
       "--num-shards",
       "1"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "List Perf Tests",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"steps\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"blink_perf.all.exact\": {@@@",
       "@@@STEP_LOG_LINE@json.output@      \"cmd\": \"/usr/bin/python /path/to/run_benmark --a=1 -v --b=2\", @@@",
       "@@@STEP_LOG_LINE@json.output@      \"device_affinity\": 0, @@@",
       "@@@STEP_LOG_LINE@json.output@      \"perf_dashboard_id\": \"blink_perf.all\"@@@",
       "@@@STEP_LOG_LINE@json.output@    }, @@@",
       "@@@STEP_LOG_LINE@json.output@    \"blink_perf.all.release\": {@@@",
@@ skipping 37 matching lines @@
       "/path/to/tmp/json",
       "--builder-name=Chrome Win7 Perf",
       "--slave-name=TestSlavename",
       "--build-number=571",
       "--run-python-script",
       "/path/to/run_benmark",
       "--a=1",
       "-v",
       "--b=2"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "blink_perf.all.exact",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@[]@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "allow_subannotations": true,
     "cmd": [
       "python",
@@ skipping 14 matching lines @@
       "/path/to/tmp/json",
       "--builder-name=Chrome Win7 Perf",
       "--slave-name=TestSlavename",
       "--build-number=571",
       "--run-python-script",
       "/path/to/run_benmark",
       "--a=1",
       "-v",
       "--b=2"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "blink_perf.all.release",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@[]@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]\\scripts\\slave\\process_dumps.py",
       "--target",
       "Release"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "process_dumps"
   }
 ]