diff --git a/brightray/brightray.gypi b/brightray/brightray.gypi
index 264f8dc9db35..0cc1537dfeb2 100644
--- a/brightray/brightray.gypi
+++ b/brightray/brightray.gypi
@@ -291,6 +291,7 @@
             'ldflags': [
               '-flto=thin',
               '-fuse-ld=lld',  # Chromium Clang uses lld for doing LTO
+              '-Wl,--icf=all',
               '-Wl,--lto-O0',  # this could be removed in future; see https://codereview.chromium.org/2939923004
               '-Wl,-mllvm,-function-sections',
               '-Wl,-mllvm,-data-sections',