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

mojo/edk/system/core.h

Index: mojo/edk/system/core.h
diff --git a/mojo/edk/system/core.h b/mojo/edk/system/core.h
index 7871480e72c158a16763a21fd0ed6a2a491a778a..5e061f1ebc58eeb637cd43f14afcec70543cfab7 100644
--- a/mojo/edk/system/core.h
+++ b/mojo/edk/system/core.h
@@ -24,6 +24,7 @@
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/message_pipe.h"
+#include "mojo/public/c/system/platform_handle.h"
 #include "mojo/public/c/system/types.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
@@ -239,6 +240,23 @@ class MOJO_SYSTEM_IMPL_EXPORT Core {
                        MojoMapBufferFlags flags);
   MojoResult UnmapBuffer(void* buffer);
 
+  // These methods correspond to the API functions defined in
+  // "mojo/public/c/system/platform_handle.h".
+  MojoResult WrapPlatformHandle(const MojoPlatformHandle* platform_handle,
+                                MojoHandle* mojo_handle);
+  MojoResult UnwrapPlatformHandle(MojoHandle mojo_handle,
+                                  MojoPlatformHandle* platform_handle);
+  MojoResult WrapPlatformSharedBufferHandle(
+      const MojoPlatformHandle* platform_handle,
+      size_t size,
+      MojoPlatformSharedBufferHandleFlags flags,
+      MojoHandle* mojo_handle);
+  MojoResult UnwrapPlatformSharedBufferHandle(
+      MojoHandle mojo_handle,
+      MojoPlatformHandle* platform_handle,
+      size_t* size,
+      MojoPlatformSharedBufferHandleFlags* flags);
+
   void GetActiveHandlesForTest(std::vector<MojoHandle>* handles);
 
  private: