Roll buildtools cb12d6e864..8e94621c36

Roll buildtools cb12d6e864..8e94621c36

  In order to roll GN b4dbf044c5..f13158d3c5 (r443809:r445411) and pick up
  the following changes:

  adbf15668dc1 GN: Add optional default_args variable to .gn.
  bb57bea1642b Validate GN substitutions in args and rsp files.
  6c0a0762e465 Remove obsolete GN check.md documentation.
  de19976ca12b Consolidate Xcode Project Setup
  6d75d94d4a41 gn: fix build with GCC 5

TBR=dpranke@chromium.org

Review-Url: https://codereview.chromium.org/2647423002
Cr-Commit-Position: refs/heads/master@{#445471}
Committed: https://chromium.googlesource.com/chromium/src/+/ed8d8325bf6b78433c13c01d0972fc491b6555a3

[brettw, 2017-01-23 19:20:50]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2017-01-23 19:21:20]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-23 20:36:39]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485199250479550, "parent_rev":
"2ba6bc624e1a29ebe9fa66c36cc96e16224c858a", "commit_rev":
"ed8d8325bf6b78433c13c01d0972fc491b6555a3"}

[commit-bot: I haz the power, 2017-01-23 20:37:11]

Description was changed from

==========
Roll buildtools cb12d6e864..8e94621c36

  In order to roll GN b4dbf044c5..f13158d3c5 (r443809:r445411) and pick up
  the following changes:

  adbf15668dc1 GN: Add optional default_args variable to .gn.
  bb57bea1642b Validate GN substitutions in args and rsp files.
  6c0a0762e465 Remove obsolete GN check.md documentation.
  de19976ca12b Consolidate Xcode Project Setup
  6d75d94d4a41 gn: fix build with GCC 5

TBR=dpranke@chromium.org
==========

to

==========
Roll buildtools cb12d6e864..8e94621c36

  In order to roll GN b4dbf044c5..f13158d3c5 (r443809:r445411) and pick up
  the following changes:

  adbf15668dc1 GN: Add optional default_args variable to .gn.
  bb57bea1642b Validate GN substitutions in args and rsp files.
  6c0a0762e465 Remove obsolete GN check.md documentation.
  de19976ca12b Consolidate Xcode Project Setup
  6d75d94d4a41 gn: fix build with GCC 5

TBR=dpranke@chromium.org

Review-Url: https://codereview.chromium.org/2647423002
Cr-Commit-Position: refs/heads/master@{#445471}
Committed:
https://chromium.googlesource.com/chromium/src/+/ed8d8325bf6b78433c13c01d0972...
==========

[commit-bot: I haz the power, 2017-01-23 20:37:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/ed8d8325bf6b78433c13c01d0972...

[Dirk Pranke, 2017-01-23 22:48:46]

lgtm