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

mojo/public/platform/native/system_thunks.cc

Index: mojo/public/platform/native/system_thunks.cc
diff --git a/mojo/public/platform/native/system_thunks.cc b/mojo/public/platform/native/system_thunks.cc
index 238ede3f7e173a76891964983a62120acb45f6a4..82b6bdee3a161a59e89d64b834592587c4953708 100644
--- a/mojo/public/platform/native/system_thunks.cc
+++ b/mojo/public/platform/native/system_thunks.cc
@@ -243,6 +243,38 @@ MojoResult MojoGetMessageBuffer(MojoMessageHandle message, void** buffer) {
   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))