[gn] Move build to gypfiles

build/download_gold_plugin.py

Index: build/download_gold_plugin.py
diff --git a/build/download_gold_plugin.py b/build/download_gold_plugin.py
deleted file mode 100755
index b8131fd449d7e279fa54185eb68bed42b036e99a..0000000000000000000000000000000000000000
--- a/build/download_gold_plugin.py
+++ /dev/null
@@ -1,81 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2015 the V8 project authors. All rights reserved.
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Script to download LLVM gold plugin from google storage."""
-
-import json
-import os
-import re
-import platform
-import shutil
-import subprocess
-import sys
-import zipfile
-
-# Bail out on windows and cygwin.
-if "win" in platform.system().lower():
-  # Python 2.7.6 hangs at the second path.insert command on windows. Works
-  # with python 2.7.8.
-  print "Gold plugin download not supported on windows."
-  sys.exit(0)
-
-SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
-CHROME_SRC = os.path.abspath(os.path.join(SCRIPT_DIR, os.pardir))
-sys.path.insert(0, os.path.join(CHROME_SRC, 'tools'))
-
-import find_depot_tools
-
-DEPOT_PATH = find_depot_tools.add_depot_tools_to_path()
-GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py')
-
-LLVM_BUILD_PATH = os.path.join(CHROME_SRC, 'third_party', 'llvm-build',
-                               'Release+Asserts')
-CLANG_UPDATE_PY = os.path.join(CHROME_SRC, 'tools', 'clang', 'scripts',
-                               'update.py')
-CLANG_REVISION = os.popen(CLANG_UPDATE_PY + ' --print-revision').read().rstrip()
-
-CLANG_BUCKET = 'gs://chromium-browser-clang/Linux_x64'
-
-GOLD_PLUGIN_PATH = os.path.join(LLVM_BUILD_PATH, 'lib', 'LLVMgold.so')
-
-sys.path.insert(0, os.path.join(CHROME_SRC, 'tools', 'clang', 'scripts'))
-
-import update
-
-def main():
-  if not re.search(r'cfi_vptr=1', os.environ.get('GYP_DEFINES', '')):
-    # Bailout if this is not a cfi build.
-    print 'Skipping gold plugin download for non-cfi build.'
-    return 0
-  if (os.path.exists(GOLD_PLUGIN_PATH) and
-      update.ReadStampFile().strip() == update.PACKAGE_VERSION):
-    # Bailout if clang is up-to-date. This requires the script to be run before
-    # the clang update step! I.e. afterwards clang would always be up-to-date.
-    print 'Skipping gold plugin download. File present and clang up to date.'
-    return 0
-
-  # Make sure this works on empty checkouts (i.e. clang not downloaded yet).
-  if not os.path.exists(LLVM_BUILD_PATH):
-    os.makedirs(LLVM_BUILD_PATH)
-
-  targz_name = 'llvmgold-%s.tgz' % CLANG_REVISION
-  remote_path = '%s/%s' % (CLANG_BUCKET, targz_name)
-
-  os.chdir(LLVM_BUILD_PATH)
-
-  # TODO(pcc): Fix gsutil.py cp url file < /dev/null 2>&0
-  # (currently aborts with exit code 1,
-  # https://github.com/GoogleCloudPlatform/gsutil/issues/289) or change the
-  # stdin->stderr redirect in update.py to do something else (crbug.com/494442).
-  subprocess.check_call(['python', GSUTIL_PATH,
-                         'cp', remote_path, targz_name],
-                        stderr=open('/dev/null', 'w'))
-  subprocess.check_call(['tar', 'xzf', targz_name])
-  os.remove(targz_name)
-  return 0
-
-if __name__ == '__main__':
-  sys.exit(main())