Remove yasm (and DONT_EMBED_BUILD_METADATA).

third_party/yasm/run_yasm.py

-# Copyright 2014 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.
-
-"""A wrapper to run yasm.
-
-Its main job is to provide a Python wrapper for GN integration, and to write
-the makefile-style output yasm generates in stdout to a .d file for dependency
-management of .inc files.
-
-Run with:
-  python run_yasm.py <yasm_binary_path> <all other yasm args>
-
-Note that <all other yasm args> must include an explicit output file (-o). This
-script will append a ".d" to this and write the dependencies there. This script
-will add "-M" to cause yasm to write the deps to stdout, so you don't need to
-specify that.
-"""
-
-import argparse
-import sys
-import subprocess
-
-# Extract the output file name from the yasm command line so we can generate a
-# .d file with the same base name.
-parser = argparse.ArgumentParser()
-parser.add_argument("-o", dest="objfile")
-options, _ = parser.parse_known_args()
-
-objfile = options.objfile
-depfile = objfile + '.d'
-
-# Assemble.
-result_code = subprocess.call(sys.argv[1:])
-if result_code != 0:
-  sys.exit(result_code)
-
-# Now generate the .d file listing the dependencies. The -M option makes yasm
-# write the Makefile-style dependencies to stdout, but it seems that inhibits
-# generating any compiled output so we need to do this in a separate pass.
-# However, outputting deps seems faster than actually assembling, and yasm is
-# so fast anyway this is not a big deal.
-#
-# This guarantees proper dependency management for assembly files. Otherwise,
-# we would have to require people to manually specify the .inc files they
-# depend on in the build file, which will surely be wrong or out-of-date in
-# some cases.
-deps = subprocess.check_output(sys.argv[1:] + ['-M'])
-with open(depfile, "wb") as f:
-  f.write(deps)
-