Recipes: make cwd default to slave_build

scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json

Index: scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json
diff --git a/scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json b/scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json
index b1127084b423f0a69c0b7fff00f39890ab41dff1..67f0ac143e472bfab437767665dfee3a5e11b463 100644
--- a/scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json
+++ b/scripts/slave/recipes/gpu/build_and_upload.expected/analyze_builds_only_angle_unittests.json
@@ -5,6 +5,7 @@
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "cleanup temp"
   },
   {
@@ -36,6 +37,7 @@
       "src@HEAD",
       "--force"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
@@ -82,6 +84,7 @@
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=static_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
     },
@@ -96,6 +99,7 @@
       "[SLAVE_BUILD]/src/out/Release",
       "--clean-isolated-files"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "clean isolated files"
   },
   {
@@ -121,6 +125,7 @@
       "[SLAVE_BUILD]/src/testing/buildbot/trybot_analyze_config.json",
       "/path/to/tmp/json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "read filter exclusion spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: 'testing/buildbot/trybot_analyze_config.json'@@@",
@@ -147,6 +152,7 @@
       "{\"files\": [\"foo.cc\"], \"targets\": [\"angle_unittests_run\", \"content_gl_tests_run\", \"content_unittests_run\", \"gl_tests_run\", \"gles2_conform_test_run\", \"gpu_unittests_run\", \"media_unittests_run\", \"tab_capture_end2end_tests_run\", \"telemetry_gpu_test_run\"]}",
       "/path/to/tmp/json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "env": {
       "GYP_DEFINES": "archive_gpu_tests=1 blink_logging_always_on=1 component=static_library dcheck_always_on=1 disable_glibcxx_debug=1 ffmpeg_branding=Chrome gomadir='[BUILD]/goma' internal_gles2_conform_tests=1 proprietary_codecs=1 target_arch=x64 test_isolation_mode=prepare use_goma=1"
     },
@@ -183,6 +189,7 @@
       "--",
       "angle_unittests_run"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "compile (with patch)"
   },
   {
@@ -197,6 +204,7 @@
       "https://isolateserver.appspot.com",
       "[SLAVE_BUILD]/src/out/Release/angle_unittests.isolated.gen.json"
     ],
+    "cwd": "[SLAVE_BUILD]",
     "name": "isolate tests",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",