[mojo-edk] Expose portable API for platform handle wrapping

mojo/public/platform/native/system_thunks.cc

 // Copyright 2013 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_thunks.h"
 
 #include <assert.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 225 matching lines @@
 MojoResult MojoFreeMessage(MojoMessageHandle message) {
   assert(g_thunks.FreeMessage);
   return g_thunks.FreeMessage(message);
 }
 
 MojoResult MojoGetMessageBuffer(MojoMessageHandle message, void** buffer) {
   assert(g_thunks.GetMessageBuffer);
   return g_thunks.GetMessageBuffer(message, buffer);
 }
 
+MojoResult MojoWrapPlatformHandle(MojoPlatformHandle platform_handle,
+                                  MojoHandle* mojo_handle) {
+  assert(g_thunks.WrapPlatformHandle);
+  return g_thunks.WrapPlatformHandle(platform_handle, mojo_handle);
+}
+
+MojoResult MojoUnwrapPlatformHandle(MojoHandle mojo_handle,
+                                    MojoPlatformHandle* platform_handle) {
+  assert(g_thunks.UnwrapPlatformHandle);
+  return g_thunks.UnwrapPlatformHandle(mojo_handle, platform_handle);
+}
+
+MojoResult MojoWrapPlatformSharedBufferHandle(
+    MojoPlatformHandle platform_handle,
+    size_t num_bytes,
+    bool read_only,
+    MojoHandle* mojo_handle) {
+  assert(g_thunks.WrapPlatformSharedBufferHandle);
+  return g_thunks.WrapPlatformSharedBufferHandle(platform_handle, num_bytes,
+                                                 read_only, mojo_handle);
+}
+
+MojoResult MojoUnwrapPlatformSharedBufferHandle(
+    MojoHandle mojo_handle,
+    MojoPlatformHandle* platform_handle,
+    size_t* num_bytes,
+    bool* read_only) {
+  assert(g_thunks.UnwrapPlatformSharedBufferHandle);
+  return g_thunks.UnwrapPlatformSharedBufferHandle(mojo_handle, platform_handle,
+                                                   num_bytes, read_only);
+}
+
 extern "C" THUNK_EXPORT size_t MojoSetSystemThunks(
     const MojoSystemThunks* system_thunks) {
   if (system_thunks->size >= sizeof(g_thunks))
     g_thunks = *system_thunks;
   return sizeof(g_thunks);
 }
 
 }  // extern "C"