Use ChannelMojo in Pepper and NaCl processes.

components/nacl/loader/nacl_listener.h

Index: components/nacl/loader/nacl_listener.h
diff --git a/components/nacl/loader/nacl_listener.h b/components/nacl/loader/nacl_listener.h
index 8e81961ef68fe2b1879e28dcf787acd3322316ca..b9536822c2738371726e5ca63d8fd6c65a1254fd 100644
--- a/components/nacl/loader/nacl_listener.h
+++ b/components/nacl/loader/nacl_listener.h
@@ -22,6 +22,7 @@
 #include "ipc/ipc_listener.h"
 
 namespace IPC {
+class ScopedIPCSupport;
 class SyncChannel;
 class SyncMessageFilter;
 }
@@ -117,6 +118,8 @@ class NaClListener : public IPC::Listener {
 
   bool is_started_;
 
+  std::unique_ptr<IPC::ScopedIPCSupport> mojo_ipc_support_;
+
   DISALLOW_COPY_AND_ASSIGN(NaClListener);
 };