Add thunks for MojoDuplicateHandle[WithReducedRights]().

mojo/edk/embedder/entrypoints.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file contains the definitions of the system functions, which are
 // declared in various header files in mojo/public/c/system.
 
 #include "mojo/edk/embedder/embedder_internal.h"
 #include "mojo/edk/system/core.h"
 #include "mojo/public/c/system/buffer.h"
@@ skipping 13 matching lines @@
 }
 
 MojoResult MojoClose(MojoHandle handle) {
   return g_core->Close(handle);
 }
 
 MojoResult MojoGetRights(MojoHandle handle, MojoHandleRights* rights) {
   return g_core->GetRights(handle, MakeUserPointer(rights));
 }
 
+MojoResult MojoDuplicateHandleWithReducedRights(
+    MojoHandle handle,
+    MojoHandleRights rights_to_remove,
+    MojoHandle* new_handle) {
+  return g_core->DuplicateHandleWithReducedRights(handle, rights_to_remove,
+                                                  MakeUserPointer(new_handle));
+}
+
+MojoResult MojoDuplicateHandle(MojoHandle handle, MojoHandle* new_handle) {
+  return g_core->DuplicateHandleWithReducedRights(
+      handle, MOJO_HANDLE_RIGHT_NONE, MakeUserPointer(new_handle));
+}
+
 MojoResult MojoWait(MojoHandle handle,
                     MojoHandleSignals signals,
                     MojoDeadline deadline,
                     MojoHandleSignalsState* signals_state) {
   return g_core->Wait(handle, signals, deadline,
                       MakeUserPointer(signals_state));
 }
 
 MojoResult MojoWaitMany(const MojoHandle* handles,
                         const MojoHandleSignals* signals,
@@ skipping 148 matching lines @@
                          MojoMapBufferFlags flags) {
   return g_core->MapBuffer(buffer_handle, offset, num_bytes,
                            MakeUserPointer(buffer), flags);
 }
 
 MojoResult MojoUnmapBuffer(void* buffer) {
   return g_core->UnmapBuffer(MakeUserPointer(buffer));
 }
 
 }  // extern "C"