Build nacl_helper_nonsfi with GN

build/toolchain/nacl/BUILD.gn

Index: build/toolchain/nacl/BUILD.gn
diff --git a/build/toolchain/nacl/BUILD.gn b/build/toolchain/nacl/BUILD.gn
index fffecebed1bcff331eae2fa675f3363e8fff3292..f674cd577724e943435197f6193f964abba69300 100644
--- a/build/toolchain/nacl/BUILD.gn
+++ b/build/toolchain/nacl/BUILD.gn
@@ -171,3 +171,20 @@ nacl_clang_toolchains("x64") {
 nacl_clang_toolchains("arm") {
   toolchain_tuple = "arm-nacl"
 }
+
+nacl_toolchain("newlib_pnacl_nonsfi") {

[Mark Seaborn, 2015/10/22 21:48:30]

How about putting this immediately after nacl_toolchain("newlib_pnacl"), since
they share toolprefix?

[Petr Hosek, 2015/10/23 03:01:15]

Done.

+  toolchain_package = "pnacl_newlib"
+  toolchain_revision = pnacl_newlib_rev
+  toolchain_cpu = "pnacl"
+  toolprefix =
+      rebase_path("${nacl_toolchain_dir}/${toolchain_package}/bin/pnacl-",
+                  root_build_dir)
+  is_nacl_nonsfi = true
+
+  is_clang = true
+  cc = toolprefix + "clang"
+  cxx = toolprefix + "clang++"
+  ar = toolprefix + "ar"
+  ld = cxx
+  executable_extension = ""
+}