Revert "[infra] Roll clang to match the version used by Flutter"

tools/android/download_android_tools.py

Index: tools/android/download_android_tools.py
diff --git a/tools/android/download_android_tools.py b/tools/android/download_android_tools.py
deleted file mode 100644
index e16989f3146abdad5c3d3af321ca335b37c143c8..0000000000000000000000000000000000000000
--- a/tools/android/download_android_tools.py
+++ /dev/null
@@ -1,104 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2017 The Dart project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# Downloads trimmed-down Android Tools from Google Cloud Storage and extracts
-# them to INSTALL_DIR, updating INSTALL_DIR/VERSION_* stamp files with current
-# version. Does nothing if INSTALL_DIR/VERSION_* are already up to date.
-
-import os
-import shutil
-import subprocess
-import sys
-import tarfile
-
-# Path constants. (All of these should be absolute paths.)
-THIS_DIR = os.path.abspath(os.path.dirname(__file__))
-DART_ROOT = os.path.abspath(os.path.join(THIS_DIR, '..', '..'))
-# Should be the same as in upload.py.
-INSTALL_DIR = os.path.join(DART_ROOT, 'third_party', 'android_tools')
-
-sys.path.insert(0, os.path.join(DART_ROOT, 'tools'))
-import find_depot_tools
-
-DEPOT_PATH = find_depot_tools.add_depot_tools_to_path()
-GSUTIL_PATH = os.path.join(DEPOT_PATH, 'gsutil.py')
-
-def RunCommand(command):
-  """Run command and return success (True) or failure."""
-
-  print 'Running %s' % (str(command))
-  if subprocess.call(command, shell=False) == 0:
-    return True
-  print 'Failed.'
-  return False
-
-
-def GetInstalledVersion(version_stamp):
-  version_file = os.path.join(INSTALL_DIR, version_stamp)
-  if not os.path.exists(version_file):
-    return None
-  with open(version_file) as f:
-    return f.read().strip()
-
-
-def VersionStampName(tools_name):
-  if sys.platform.startswith('linux'):
-    return 'VERSION_LINUX_' + tools_name.upper()
-  elif sys.platform == 'darwin':
-    return 'VERSION_MACOSX_' + tools_name.upper()
-  else:
-    print('NOTE: Will not download android tools. Unsupported platform: ' + sys.platform)
-    sys.exit(0)
-
-
-def UpdateTools(tools_name):
-  """Downloads zipped tools from Google Cloud Storage and extracts them,
-     stamping current version."""
-
-  # Read latest version.
-  version_stamp = VersionStampName(tools_name)
-  version = ''
-  with open(os.path.join(THIS_DIR, version_stamp)) as f:
-    version = f.read().strip()
-  # Return if installed binaries are up to date.
-  if version == GetInstalledVersion(version_stamp):
-    return
-
-  # Remove the old install directory checked out from git.
-  if os.path.exists(os.path.join(INSTALL_DIR, '.git')):
-    shutil.rmtree(INSTALL_DIR)
-  # Make sure that the install directory exists.
-  if not os.path.exists(INSTALL_DIR):
-    os.mkdir(INSTALL_DIR)
-  # Remove current installation.
-  tools_root = os.path.join(INSTALL_DIR, tools_name)
-  if os.path.exists(tools_root):
-    shutil.rmtree(tools_root)
-
-  # Download tools from GCS.
-  archive_path = os.path.join(INSTALL_DIR, tools_name + '.tar.gz')
-  download_cmd = ['python', GSUTIL_PATH, 'cp',
-                  'gs://mojo/android/tool/%s.tar.gz' % version,
-                  archive_path]
-  if not RunCommand(download_cmd):
-    print ('WARNING: Failed to download Android tools.')
-    return
-
-  print "Extracting Android tools (" + tools_name + ")"
-  with tarfile.open(archive_path) as arch:
-    arch.extractall(INSTALL_DIR)
-  os.remove(archive_path)
-  # Write version as the last step.
-  with open(os.path.join(INSTALL_DIR, version_stamp), 'w+') as f:
-    f.write('%s\n' % version)
-
-
-def main():
-  UpdateTools('sdk')
-  UpdateTools('ndk')
-
-
-if __name__ == '__main__':
-  sys.exit(main())