[recipes] Remove build environment vars from default_env

infra/bots/recipes/swarm_test.expected/Test-iOS-Clang-iPad4-GPU-SGX554-Arm7-Debug.json

 [
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_install"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "install iOSShell"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_if_needed",
       "[SLAVE_BUILD]/skia/resources",
       "skiabot/skia_resources"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push resources to skia_resources"
   },
   {
     "cmd": [
       "python",
       "-u",
       "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
@@ skipping 12 matching lines @@
     ],
     "name": "write SKP_VERSION"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_cat_file",
       "skiabot/skia_tmp_dir/SKP_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "read SKP_VERSION",
     "stdout": "/path/to/tmp/"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_rm",
       "skiabot/skia_tmp_dir/SKP_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "rm skiabot/skia_tmp_dir/SKP_VERSION"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_rm",
       "skiabot/skia_skp/skps"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "rmdir skiabot/skia_skp/skps"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_mkdir",
       "skiabot/skia_skp/skps"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "mkdir skiabot/skia_skp/skps"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_if_needed",
       "[SLAVE_BUILD]/skp",
       "skiabot/skia_skp/skps"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push skp to skps"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_file",
       "[SLAVE_BUILD]/tmp/SKP_VERSION",
       "skiabot/skia_tmp_dir/SKP_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push [SLAVE_BUILD]/tmp/SKP_VERSION"
   },
   {
     "cmd": [
       "python",
       "-u",
       "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
@@ skipping 12 matching lines @@
     ],
     "name": "write SK_IMAGE_VERSION"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_cat_file",
       "skiabot/skia_tmp_dir/SK_IMAGE_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "read SK_IMAGE_VERSION",
     "stdout": "/path/to/tmp/"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_rm",
       "skiabot/skia_tmp_dir/SK_IMAGE_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "rm skiabot/skia_tmp_dir/SK_IMAGE_VERSION"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_rm",
       "skiabot/skia_images"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "rmdir skiabot/skia_images"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_mkdir",
       "skiabot/skia_images"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "mkdir skiabot/skia_images"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_if_needed",
       "[SLAVE_BUILD]/skimage",
       "skiabot/skia_images"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push skimage to skia_images"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_file",
       "[SLAVE_BUILD]/tmp/SK_IMAGE_VERSION",
       "skiabot/skia_tmp_dir/SK_IMAGE_VERSION"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push [SLAVE_BUILD]/tmp/SK_IMAGE_VERSION"
   },
   {
     "cmd": [
       "python",
       "-u",
       "\nimport os, sys\nfrom common import chromium_utils # Error? See https://crbug.com/584783.\n\n\nif os.path.exists(sys.argv[1]):\n  chromium_utils.RemoveDirectory(sys.argv[1])\n",
@@ skipping 36 matching lines @@
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_rm",
       "skiabot/skia_dm"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "rmdir skiabot/skia_dm"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_mkdir",
       "skiabot/skia_dm"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "mkdir skiabot/skia_dm"
   },
   {
     "cmd": [
       "python",
       "-u",
       "\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",
@@ skipping 17 matching lines @@
   {
     "cmd": [
       "python",
       "-u",
       "\nimport contextlib\nimport math\nimport socket\nimport sys\nimport time\nimport urllib2\n\nHASHES_URL = 'https://gold.skia.org/_/hashes'\nRETRIES = 5\nTIMEOUT = 60\nWAIT_BASE = 15\n\nsocket.setdefaulttimeout(TIMEOUT)\nfor retry in range(RETRIES):\n  try:\n    with contextlib.closing(\n        urllib2.urlopen(HASHES_URL, timeout=TIMEOUT)) as w:\n      hashes = w.read()\n      with open(sys.argv[1], 'w') as f:\n        f.write(hashes)\n        break\n  except Exception as e:\n    print 'Failed to get uninteresting hashes from %s:' % HASHES_URL\n    print e\n    if retry == RETRIES:\n      raise\n    waittime = WAIT_BASE * math.pow(2, retry)\n    print 'Retry in %d seconds.' % waittime\n    time.sleep(waittime)\n",
       "[SLAVE_BUILD]/tmp/uninteresting_hashes.txt"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out"
     },
     "name": "get uninteresting hashes",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@python.inline@@@@",
       "@@@STEP_LOG_LINE@python.inline@import contextlib@@@",
       "@@@STEP_LOG_LINE@python.inline@import math@@@",
       "@@@STEP_LOG_LINE@python.inline@import socket@@@",
       "@@@STEP_LOG_LINE@python.inline@import sys@@@",
       "@@@STEP_LOG_LINE@python.inline@import time@@@",
@@ skipping 25 matching lines @@
     ]
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_push_file",
       "[SLAVE_BUILD]/tmp/uninteresting_hashes.txt",
       "skiabot/skia_tmp_dir/uninteresting_hashes.txt"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "push [SLAVE_BUILD]/tmp/uninteresting_hashes.txt"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_run_skia",
       "--dm",
       "--undefok",
@@ skipping 365 matching lines @@
       "image",
       "_",
       ".PEF",
       "_",
       "image",
       "_",
       ".SRW"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "dm"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_pull_if_needed",
       "skiabot/skia_dm",
       "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "pull skia_dm"
   },
   {
     "cmd": [
       "[SLAVE_BUILD]/skia/platform_tools/ios/bin/ios_restart"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "reboot"
   },
   {
     "cmd": [
       "sleep",
       "20"
     ],
     "env": {
       "BUILDTYPE": "Debug",
-      "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=0",
       "SKIA_OUT": "[SLAVE_BUILD]/out",
       "XCODEBUILD": "[SLAVE_BUILD]/xcodebuild"
     },
     "name": "wait for reboot"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]