Roll buildtools.

This will include a new clang-format for standalone ANGLE.

BUG=None

Change-Id: Ia4a888c77487d03c2c83989c5f565dea993d5a06
Reviewed-on: https://chromium-review.googlesource.com/348374
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/DEPS b/DEPS
index 056d764..b5472aa 100644
--- a/DEPS
+++ b/DEPS
@@ -28,7 +28,7 @@
       Var('chromium_git') + "/chromium/src/third_party/zlib@afd8c4593c010c045902f6c0501718f1823064a3",
 
   "buildtools":
-      Var('chromium_git') + '/chromium/buildtools.git@125d157607de4d7c95bf8b02dd580aae17962f19',
+      Var('chromium_git') + '/chromium/buildtools.git@06e80a0e17319868d4a9b13f9bb6a248dc8d8b20',
 }
 
 hooks = [