angle: Stop setting secondary_source.
It's no longer needed.
Bug: chromium:947060
Change-Id: I873f17a4876b9d0fac313740853054b6867afeb9
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1610077
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
diff --git a/.gn b/.gn
index dd2aacc..187094d 100644
--- a/.gn
+++ b/.gn
@@ -13,11 +13,6 @@
# Location of the build configuration file.
buildconfig = "//build/config/BUILDCONFIG.gn"
-# The secondary source root is a parallel directory tree where
-# GN build files are placed when they can not be placed directly
-# in the source tree, e.g. for third party source trees.
-secondary_source = "//build/secondary/"
-
# These are the targets to check headers for by default. The files in targets
# matching these patterns (see "gn help label_pattern" for format) will have
# their includes checked for proper dependencies when you run either
