Use ChannelMojo for NaCl PPAPI channels.

components/nacl/loader/nacl_trusted_listener.cc

Index: components/nacl/loader/nacl_trusted_listener.cc
diff --git a/components/nacl/loader/nacl_trusted_listener.cc b/components/nacl/loader/nacl_trusted_listener.cc
index 771dd7d7223db18a5485c083daf3c884010b91d4..df8fc200c14b78b5b5d7ef904414b338d541add3 100644
--- a/components/nacl/loader/nacl_trusted_listener.cc
+++ b/components/nacl/loader/nacl_trusted_listener.cc
@@ -48,15 +48,6 @@ NaClTrustedListener::NaClTrustedListener(
 NaClTrustedListener::~NaClTrustedListener() {
 }
 
-IPC::ChannelHandle NaClTrustedListener::TakeClientChannelHandle() {
-  IPC::ChannelHandle handle = channel_handle_;
-#if defined(OS_POSIX)
-  handle.socket =
-      base::FileDescriptor(channel_->TakeClientFileDescriptor());
-#endif
-  return handle;
-}
-
 bool NaClTrustedListener::OnMessageReceived(const IPC::Message& msg) {
   return false;
 }