add jumbo support when building gn itself

Change-Id: Ia9af79c05b910e2fa345825d225ff6cfc3a1ec78
Reviewed-on: https://chromium-review.googlesource.com/791590
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Original-Commit-Position: refs/heads/master@{#519597}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: e643f226b1b9dfb90997f7f2fb76e78320156af2
3 files changed
tree: fe80d85c86b50e3348f9de4f5a70d53003851d0f
  1. tools/