Add thunks for MojoDuplicateHandle[WithReducedRights]().

mojo/public/platform/native/system_impl_private_thunks.c

 // Copyright 2015 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.
 
 #include "mojo/public/platform/native/system_impl_private_thunks.h"
 
 #include <assert.h>
 
 #include "mojo/public/platform/native/thunk_export.h"
 
@@ skipping 30 matching lines @@
   return g_system_impl_thunks.Close(system, handle);
 }
 
 MojoResult MojoSystemImplGetRights(MojoSystemImpl system,
                                    MojoHandle handle,
                                    MojoHandleRights* rights) {
   assert(g_system_impl_thunks.GetRights);
   return g_system_impl_thunks.GetRights(system, handle, rights);
 }
 
+MojoResult MojoSystemImplDuplicateHandleWithReducedRights(
+    MojoSystemImpl system,
+    MojoHandle handle,
+    MojoHandleRights rights_to_remove,
+    MojoHandle* new_handle) {
+  assert(g_system_impl_thunks.DuplicateHandleWithReducedRights);
+  return g_system_impl_thunks.DuplicateHandleWithReducedRights(
+      system, handle, rights_to_remove, new_handle);
+}
+
+MojoResult MojoSystemImplDuplicateHandle(MojoSystemImpl system,
+                                         MojoHandle handle,
+                                         MojoHandle* new_handle) {
+  assert(g_system_impl_thunks.DuplicateHandle);
+  return g_system_impl_thunks.DuplicateHandle(system, handle, new_handle);
+}
+
 MojoResult MojoSystemImplWait(MojoSystemImpl system,
                               MojoHandle handle,
                               MojoHandleSignals signals,
                               MojoDeadline deadline,
                               struct MojoHandleSignalsState* signals_state) {
   assert(g_system_impl_thunks.Wait);
   return g_system_impl_thunks.Wait(system, handle, signals, deadline,
                                    signals_state);
 }
 
@@ skipping 202 matching lines @@
     g_system_impl_control_thunks = *system_thunks;
   return sizeof(g_system_impl_control_thunks);
 }
 
 THUNK_EXPORT size_t MojoSetSystemImplThunksPrivate(
     const struct MojoSystemImplThunksPrivate* system_thunks) {
   if (system_thunks->size >= sizeof(g_system_impl_thunks))
     g_system_impl_thunks = *system_thunks;
   return sizeof(g_system_impl_thunks);
 }