[gn] Port linux_use_bundled_binutils_override GN variable

build_overrides/build.gni

 # Copyright 2016 The V8 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.
 
 mac_sdk_min_build_override = "10.10"
 mac_deployment_target_build_override = "10.7"
 
 # Variable that can be used to support multiple build scenarios, like having
 # Chromium specific targets in a client project's GN file etc.
 build_with_chromium = false
 
 # Uncomment these to specify a different NDK location and version in
 # non-Chromium builds.
 # default_android_ndk_root = "//third_party/android_tools/ndk"
 # default_android_ndk_version = "r10e"
 
 # Some non-Chromium builds don't support building java targets.
 enable_java_templates = false
 
+# Some non-Chromium builds don't use Chromium's third_party/binutils.

[Lei Zhang, 2016/08/31 07:41:37]

This should say "V8 uses Chromium's third_party/binutils to speed up linking."

[Michael Achenbach, 2016/08/31 08:31:09]

Hmm, yea - I didn't tidy any of the comments here. Feel free to change it. I
filed http://crbug.com/642641 for the general probelm.

+linux_use_bundled_binutils_override = true
+
 # Allows different projects to specify their own suppressions files.
 asan_suppressions_file = "//build/sanitizers/asan_suppressions.cc"
 lsan_suppressions_file = "//build/sanitizers/lsan_suppressions.cc"
 tsan_suppressions_file = "//build/sanitizers/tsan_suppressions.cc"