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

mojo/public/platform/native/system_thunks.h

 // 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.
 
 // Note: This header should be compilable as C.
 
 #ifndef MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_THUNKS_H_
 #define MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_THUNKS_H_
 
 #include <stddef.h>
@@ skipping 118 matching lines @@
                                MojoHandle* handles,
                                uint32_t* num_handles,
                                MojoReadMessageFlags flags);
   MojoResult (*AllocMessage)(uint32_t num_bytes,
                              const MojoHandle* handles,
                              uint32_t num_handles,
                              MojoAllocMessageFlags flags,
                              MojoMessageHandle* message);
   MojoResult (*FreeMessage)(MojoMessageHandle message);
   MojoResult (*GetMessageBuffer)(MojoMessageHandle message, void** buffer);
+  MojoResult (*WrapPlatformHandle)(MojoPlatformHandle platform_handle,
+                                   MojoHandle* mojo_handle);
+  MojoResult (*UnwrapPlatformHandle)(MojoHandle mojo_handle,
+                                     MojoPaltformHandle* platform_handle);
+  MojoResult (*WrapPlatformSharedBufferHandle)(
+      MojoPlatformHandle platform_handle,
+      size_t num_bytes,
+      MojoPlatformSharedBufferHandleFlags flags,
+      MojoHandle* mojo_handle);
+  MojoResult (*UnwrapPlatformSharedBufferHandle)(
+      MojoHandle mojo_handle,
+      MojoPlatformHandle* platform_handle,
+      size_t* num_bytes,
+      MojoPlatformSharedBufferHandleFlags* flags);
 };
 #pragma pack(pop)
 
 
 #ifdef __cplusplus
 // Intended to be called from the embedder. Returns a |MojoCore| initialized
 // to contain pointers to each of the embedder's MojoCore functions.
 inline MojoSystemThunks MojoMakeSystemThunks() {
   MojoSystemThunks system_thunks = {sizeof(MojoSystemThunks),
                                     MojoGetTimeTicksNow,
@@ skipping 18 matching lines @@
                                     MojoAddHandle,
                                     MojoRemoveHandle,
                                     MojoGetReadyHandles,
                                     MojoWatch,
                                     MojoCancelWatch,
                                     MojoFuseMessagePipes,
                                     MojoWriteMessageNew,
                                     MojoReadMessageNew,
                                     MojoAllocMessage,
                                     MojoFreeMessage,
-                                    MojoGetMessageBuffer};
+                                    MojoGetMessageBuffer,
+                                    MojoWrapPlatformHandle,
+                                    MojoUnwrapPlatformHandle,
+                                    MojoWrapPlatformSharedBufferHandle,
+                                    MojoUnwrapPlatformSharedBufferHandle};
   return system_thunks;
 }
 #endif
 
 
 // Use this type for the function found by dynamically discovering it in
 // a DSO linked with mojo_system. For example:
 // MojoSetSystemThunksFn mojo_set_system_thunks_fn =
 //     reinterpret_cast<MojoSetSystemThunksFn>(app_library.GetFunctionPointer(
 //         "MojoSetSystemThunks"));
 // The expected size of |system_thunks} is returned.
 // The contents of |system_thunks| are copied.
 typedef size_t (*MojoSetSystemThunksFn)(
     const struct MojoSystemThunks* system_thunks);
 
 #endif  // MOJO_PUBLIC_PLATFORM_NATIVE_SYSTEM_THUNKS_H_