Fix V8 arm build.

TBR=inferno@chromium.org,rockot@chromium.org

Bug: 856188
Change-Id: Ic215f12810032592df4ed6832ecc40f92068bbc8
Reviewed-on: https://chromium-review.googlesource.com/1113710
Commit-Queue: Oliver Chang <ochang@chromium.org>
Reviewed-by: Oliver Chang <ochang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570329}

mojo/public/cpp/bindings/BUILD.gn

@@ -3,6 +3,7 @@
 # found in the LICENSE file.
 
 import("//build/buildflag_header.gni")
+import("//build/config/nacl/config.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 declare_args() {
@@ -167,7 +168,7 @@ component("bindings") {
     "unique_ptr_impl_ref_traits.h",
   ]
 
-  if (enable_ipc_fuzzer && current_toolchain == host_toolchain) {
+  if (enable_ipc_fuzzer && !is_nacl_nonsfi) {
     sources += [
       "lib/message_dumper.cc",
       "message_dumper.h",

tools/ipc_fuzzer/BUILD.gn

@@ -2,10 +2,11 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/nacl/config.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 config("ipc_fuzzer_config") {
-  if (current_toolchain == host_toolchain) {
+  if (!is_nacl_nonsfi) {
     defines = [ "ENABLE_IPC_FUZZER" ]
   }
 }