Roll src/buildtools/ 9c40f80c9..461b345a8 (3 commits)

https://chromium.googlesource.com/chromium/buildtools.git/+log/9c40f80c9998..461b345a815c

$ git log 9c40f80c9..461b345a8 --date=short --no-merges --format='%ad %ae %s'
2017-11-17 jmadill Add migration code for no_exceptions configs.
2017-11-16 thomasanderson Fix typo: fuschia -> fuchsia
2017-11-16 thomasanderson Always hide libunwind symbols on desktop Linux

Created with:
  roll-dep src/buildtools
[email protected]
BUG=727437

Change-Id: I6dd70fd5ae642dd6a861e02913469f65e333bd19
Reviewed-on: https://chromium-review.googlesource.com/777031
Reviewed-by: Jamie Madill <[email protected]>
Commit-Queue: Jamie Madill <[email protected]>
Cr-Commit-Position: refs/heads/master@{#517520}
diff --git a/DEPS b/DEPS
index 13cf1ffb..3aa9b98 100644
--- a/DEPS
+++ b/DEPS
@@ -90,7 +90,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
-  'buildtools_revision': '9c40f80c99981e0e3b8ab444ead3d8de8751c103',
+  'buildtools_revision': '461b345a815c1c745ac0534a6a4bd52d123abe68',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.