Roll buildtools b747a9e091..68e3c238a5

Roll buildtools b747a9e091..68e3c238a5

  In order to roll GN 7c3f6cc650..e33d0667da (r363049:r364398) and pick up
  the following changes:

  936b61a No GN phony rules when it matches outputs.
  22d5fac tools/gn: depend on allocator_extension.cc to keep bootstrap working
  90cdb30 Reference configs variable from config help in GN
  dda6c27 Remove allocator_extension_thunks since this layer is not required
  79adad4 Format all BUILD.gn with "gn format --in-place".
  0cbfc07f6 tools/gn: update reference.md doc
  910ac44 [GN] Add support to rebase_path to resolve paths above the source root.
  7741ab4 tools/gn: forward declare some base types in trace.h

TBR=dpranke@chromium.org
CQ_EXTRA_TRYBOTS=tryserver.chromium.mac:mac_chromium_gn_dbg;tryserver.chromium.win:win8_chromium_gn_dbg,win_chromium_gn_x64_rel

Committed: https://crrev.com/7d8337726631f74c1310fa65bd4f504e9d3d352f
Cr-Commit-Position: refs/heads/master@{#364508}

[brettw, 2015-12-10 18:26:20]

The CQ bit was checked by brettw@chromium.org

[Dirk Pranke, 2015-12-10 18:27:20]

lgtm

[commit-bot: I haz the power, 2015-12-10 18:28:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1517583004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1517583004/1

[commit-bot: I haz the power, 2015-12-10 20:52:08]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-12-10 20:52:08]

Try jobs failed on following builders:
  linux_android_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...)

[brettw, 2015-12-10 20:59:37]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2015-12-10 21:04:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1517583004/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1517583004/1

[commit-bot: I haz the power, 2015-12-10 22:36:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-10 22:37:30]

Description was changed from

==========
Roll buildtools b747a9e091..68e3c238a5

  In order to roll GN 7c3f6cc650..e33d0667da (r363049:r364398) and pick up
  the following changes:

  936b61a No GN phony rules when it matches outputs.
  22d5fac tools/gn: depend on allocator_extension.cc to keep bootstrap working
  90cdb30 Reference configs variable from config help in GN
  dda6c27 Remove allocator_extension_thunks since this layer is not required
  79adad4 Format all BUILD.gn with "gn format --in-place".
  0cbfc07f6 tools/gn: update reference.md doc
  910ac44 [GN] Add support to rebase_path to resolve paths above the source
root.
  7741ab4 tools/gn: forward declare some base types in trace.h

TBR=dpranke@chromium.org
CQ_EXTRA_TRYBOTS=tryserver.chromium.mac:mac_chromium_gn_dbg;tryserver.chromium.win:win8_chromium_gn_dbg,win_chromium_gn_x64_rel
==========

to

==========
Roll buildtools b747a9e091..68e3c238a5

  In order to roll GN 7c3f6cc650..e33d0667da (r363049:r364398) and pick up
  the following changes:

  936b61a No GN phony rules when it matches outputs.
  22d5fac tools/gn: depend on allocator_extension.cc to keep bootstrap working
  90cdb30 Reference configs variable from config help in GN
  dda6c27 Remove allocator_extension_thunks since this layer is not required
  79adad4 Format all BUILD.gn with "gn format --in-place".
  0cbfc07f6 tools/gn: update reference.md doc
  910ac44 [GN] Add support to rebase_path to resolve paths above the source
root.
  7741ab4 tools/gn: forward declare some base types in trace.h

TBR=dpranke@chromium.org
CQ_EXTRA_TRYBOTS=tryserver.chromium.mac:mac_chromium_gn_dbg;tryserver.chromium.win:win8_chromium_gn_dbg,win_chromium_gn_x64_rel

Committed: https://crrev.com/7d8337726631f74c1310fa65bd4f504e9d3d352f
Cr-Commit-Position: refs/heads/master@{#364508}
==========

[commit-bot: I haz the power, 2015-12-10 22:37:30]

Patchset 1 (id:??) landed as
https://crrev.com/7d8337726631f74c1310fa65bd4f504e9d3d352f
Cr-Commit-Position: refs/heads/master@{#364508}