Create a broker interface for the new Mojo EDK so that the browser can create and duplicate messa...

mojo/edk/system/token_serializer_win.h

+// 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.
+
+#ifndef MOJO_EDK_SYSTEM_TOKEN_SERIALIZER_WIN_H_
+#define MOJO_EDK_SYSTEM_TOKEN_SERIALIZER_WIN_H_
+
+#include <stdint.h>
+#include <vector>
+
+#include "mojo/edk/embedder/scoped_platform_handle.h"
+
+namespace mojo {
+namespace edk {
+
+// An interface for serializing a Mojo handle to memory. A child process will

[yzshen1, 2015/11/20 20:39:55]

nit: This interface deals with platform handles instead of Mojo handles.

+// have to make sync calls to the parent process.
+class MOJO_SYSTEM_IMPL_EXPORT TokenSerializer {
+ public:
+  virtual ~TokenSerializer() {}
+
+  // Create a PlatformChannelPair.
+  virtual void CreatePlatformChannelPair(ScopedPlatformHandle* server,
+                                         ScopedPlatformHandle* client) = 0;
+
+  // Converts the given platform handles to tokens.
+  // |tokens| should point to memory that is sizeof(uint64_t) * count;
+  virtual void HandleToToken(const PlatformHandle* platform_handles,
+                             size_t count,
+                             uint64_t* tokens) = 0;
+
+  // Converts the given tokens to platformhandles.
+  // |handles| should point to memory that is sizeof(HANDLE) * count;
+  virtual void TokenToHandle(const uint64_t* tokens,
+                             size_t count,
+                             PlatformHandle* handles) = 0;
+};
+
+}  // namespace edk
+}  // namespace mojo
+
+#endif  // MOJO_EDK_SYSTEM_TOKEN_SERIALIZER_WIN_H_