Roll build/ 81ffd0040..3930eef49 (242 commits)

https://chromium.googlesource.com/chromium/src/build.git/+log/81ffd0040199..3930eef4949d

Created with:
  roll-dep build

TBR=tsepez@chromium.org

Change-Id: I811904c2c2e08d2091450307f4f53a532f5d0f8f
Reviewed-on: https://pdfium-review.googlesource.com/c/47757
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index a5dd155..3fe5114 100644
--- a/DEPS
+++ b/DEPS
@@ -15,7 +15,7 @@
 
   'android_ndk_revision': '5cd86312e794bdf542a3685c6f10cbb96072990b',
   'binutils_revision': '2be73f7fbf783d7a0b288e174a5773b67c7656bc',
-  'build_revision': '81ffd00401995c9ae0b99557b82e319a2a0498d1',
+  'build_revision': '3930eef4949dc294ea50378c9a92f9ad61a05c5e',
   'buildtools_revision': '0e1cbc4eab6861b0c84bf2ed9a3c4b7aa2063819',
   'catapult_revision': '5d5091665700495b0d212cc504fd48530565eecf',
   'clang_revision': '2cf76f56cb0f9cb84105f00bbc742416729b905d',