Use ChannelMojo from the browser to NaCl loader process.

components/nacl/loader/nonsfi/nonsfi_listener.h

Index: components/nacl/loader/nonsfi/nonsfi_listener.h
diff --git a/components/nacl/loader/nonsfi/nonsfi_listener.h b/components/nacl/loader/nonsfi/nonsfi_listener.h
index 28d15961b2c87756db8ca50fe467262158308cfa..c3a9ee5935293faed5b8405ff2bfb549424cf71a 100644
--- a/components/nacl/loader/nonsfi/nonsfi_listener.h
+++ b/components/nacl/loader/nonsfi/nonsfi_listener.h
@@ -21,6 +21,12 @@ class Message;
 class SyncChannel;
 }  // namespace IPC
 
+namespace mojo {
+namespace edk {
+class ScopedIPCSupport;
+}  // namespace edk
+}  // namespace mojo
+
 class NaClTrustedListener;
 
 namespace nacl {
@@ -47,6 +53,7 @@ class NonSfiListener : public IPC::Listener {
   base::WaitableEvent shutdown_event_;
   std::unique_ptr<IPC::SyncChannel> channel_;
   scoped_refptr<NaClTrustedListener> trusted_listener_;
+  std::unique_ptr<mojo::edk::ScopedIPCSupport> mojo_ipc_support_;
 
   std::unique_ptr<std::map<std::string, int>> key_fd_map_;