Reland "Skia: Maintain a checkout on swarming (compile) bots"

scripts/slave/recipes/skia/swarm_compile.expected/Build-Mac-Clang-Arm7-Release-iOS.json

 [
   {
     "cmd": [
       "python",
       "-u",
-      "[SLAVE_BUILD]/skia/tools/buildbot_spec.py",
+      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
+      "[CUSTOM_/_B_CACHE]",
+      "511"
+    ],
+    "name": "makedirs checkout_path",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
+      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
+      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
+      "config",
+      "--spec",
+      "cache_dir = None\nsolutions = [{'deps_file': 'DEPS', 'managed': False, 'name': 'skia', 'url': 'https://skia.googlesource.com/skia.git'}]\ntarget_os = ['llvm']"
+    ],
+    "cwd": "[CUSTOM_/_B_CACHE]",
+    "env": {
+      "CHROME_HEADLESS": "1",
+      "PATH": "[DEPOT_TOOLS]:%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "PYTHONPATH": "[BUILD]/scripts"
+    },
+    "name": "gclient setup"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
+      "sync",
+      "--nohooks",
+      "--force",
+      "--verbose",
+      "--delete_unversioned_trees",
+      "--revision",
+      "skia@abc123",
+      "--output-json",
+      "/path/to/tmp/json"
+    ],
+    "cwd": "[CUSTOM_/_B_CACHE]",
+    "env": {
+      "CHROME_HEADLESS": "1",
+      "PATH": "[DEPOT_TOOLS]:%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
+      "PYTHONPATH": "[BUILD]/scripts"
+    },
+    "name": "gclient sync",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"solutions\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"skia/\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": 164710@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  }@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision@164710@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "[CUSTOM_/_B_CACHE]/skia/tools/buildbot_spec.py",
       "/path/to/tmp/json",
       "Build-Mac-Clang-Arm7-Release-iOS"
     ],
-    "cwd": "[SLAVE_BUILD]/skia",
+    "cwd": "[CUSTOM_/_B_CACHE]/skia",
     "name": "exec buildbot_spec.py",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"build_targets\": [@@@",
       "@@@STEP_LOG_LINE@json.output@    \"most\"@@@",
       "@@@STEP_LOG_LINE@json.output@  ], @@@",
       "@@@STEP_LOG_LINE@json.output@  \"builder_cfg\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"compiler\": \"Clang\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"configuration\": \"Release\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"extra_config\": \"iOS\", @@@",
@@ skipping 19 matching lines @@
       "@@@STEP_LOG_LINE@json.output@  \"upload_dm_results\": true, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"upload_perf_results\": false@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_ninja"
     ],
-    "cwd": "[SLAVE_BUILD]/skia",
+    "cwd": "[CUSTOM_/_B_CACHE]/skia",
     "env": {
       "BUILDTYPE": "Release",
       "CC": "/usr/bin/clang",
       "CHROME_HEADLESS": "1",
       "CXX": "/usr/bin/clang++",
       "GYP_DEFINES": "skia_arch_type=arm skia_clang_build=1 skia_os=ios skia_warnings_as_errors=1",
-      "PATH": "[SLAVE_BUILD]/depot_tools:%(PATH)s",
-      "SKIA_OUT": "[SLAVE_BUILD]/out"
+      "PATH": "[DEPOT_TOOLS]:%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
+      "PYTHONPATH": "[BUILD]/scripts",
+      "SKIA_OUT": "[CUSTOM_/_B_CACHE]/skia/out/Build-Mac-Clang-Arm7-Release-iOS"
     },
     "name": "build iOSShell"
   },
   {
     "cmd": [
       "python",
       "-u",
       "import errno\nimport glob\nimport os\nimport shutil\nimport sys\n\nsrc = sys.argv[1]\ndst = sys.argv[2]\nbuild_products_whitelist = ['dm', 'dm.exe', 'nanobench', 'nanobench.exe', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa']\n\ntry:\n  os.makedirs(dst)\nexcept OSError as e:\n  if e.errno != errno.EEXIST:\n    raise\n\nfor pattern in build_products_whitelist:\n  path = os.path.join(src, pattern)\n  for f in glob.glob(path):\n    print 'Copying build product %s to %s' % (f, dst)\n    shutil.move(f, dst)\n",
-      "[SLAVE_BUILD]/out/Release",
+      "[CUSTOM_/_B_CACHE]/skia/out/Build-Mac-Clang-Arm7-Release-iOS/Release",
       "[SWARM_OUT_DIR]/out/Release"
     ],
     "name": "copy build products",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@import errno@@@",
       "@@@STEP_LOG_LINE@python.inline@import glob@@@",
       "@@@STEP_LOG_LINE@python.inline@import os@@@",
       "@@@STEP_LOG_LINE@python.inline@import shutil@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ skipping 13 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    print 'Copying build product %s to %s' % (f, dst)@@@",
       "@@@STEP_LOG_LINE@python.inline@    shutil.move(f, dst)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "import errno\nimport glob\nimport os\nimport shutil\nimport sys\n\nsrc = sys.argv[1]\ndst = sys.argv[2]\nbuild_products_whitelist = ['dm', 'dm.exe', 'nanobench', 'nanobench.exe', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa']\n\ntry:\n  os.makedirs(dst)\nexcept OSError as e:\n  if e.errno != errno.EEXIST:\n    raise\n\nfor pattern in build_products_whitelist:\n  path = os.path.join(src, pattern)\n  for f in glob.glob(path):\n    print 'Copying build product %s to %s' % (f, dst)\n    shutil.move(f, dst)\n",
-      "[SLAVE_BUILD]/skia/xcodebuild/Release-iphoneos",
+      "[CUSTOM_/_B_CACHE]/skia/xcodebuild/Release-iphoneos",
       "[SWARM_OUT_DIR]/xcodebuild/Release-iphoneos"
     ],
     "name": "copy build products (2)",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@import errno@@@",
       "@@@STEP_LOG_LINE@python.inline@import glob@@@",
       "@@@STEP_LOG_LINE@python.inline@import os@@@",
       "@@@STEP_LOG_LINE@python.inline@import shutil@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@@@@",
@@ skipping 14 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    shutil.move(f, dst)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]