Delete unused coverage recipe code.

tools/llvm_coverage_run.py

-#!/usr/bin/env python
-# Copyright (c) 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.
-
-
-"""Run the given command through LLVM's coverage tools."""
-
-
-import argparse
-import os
-import subprocess
-
-
-BUILDTYPE = 'Coverage'
-PROFILE_DATA = 'default.profraw'
-PROFILE_DATA_MERGED = 'prof_merged'
-SKIA_OUT = 'SKIA_OUT'
-
-
-def _get_out_dir():
-  """Determine the location for compiled binaries."""
-  return os.path.join(os.environ.get(SKIA_OUT, os.path.realpath('out')),
-                      BUILDTYPE)
-
-
-def run_coverage(cmd):
-  """Run the given command and return per-file coverage data.
-
-  Assumes that the binary has been built using llvm_coverage_build and that
-  LLVM 3.6 or newer is installed.
-  """
-  binary_path = os.path.join(_get_out_dir(), cmd[0])
-  subprocess.call([binary_path] + cmd[1:])
-  try:
-    subprocess.check_call(
-        ['llvm-profdata', 'merge', PROFILE_DATA,
-         '-output=%s' % PROFILE_DATA_MERGED])
-  finally:
-    os.remove(PROFILE_DATA)
-  try:
-    return subprocess.check_output(['llvm-cov', 'show', '-no-colors',
-                                    '-instr-profile', PROFILE_DATA_MERGED,
-                                    binary_path])
-  finally:
-    os.remove(PROFILE_DATA_MERGED)
-
-
-def main():
-  """Run coverage and generate a report."""
-  # Parse args.
-  parser = argparse.ArgumentParser()
-  parser.add_argument('--outResultsFile')
-  args, cmd = parser.parse_known_args()
-
-  # Run coverage.
-  report = run_coverage(cmd)
-  with open(args.outResultsFile, 'w') as f:
-    f.write(report)
-
-
-if __name__ == '__main__':
-  main()