ipc: Write end-to-end tests for SharedMemoryHandle brokering on Mac.

ipc/handle_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 IPC_HANDLE_WIN_H_
 #define IPC_HANDLE_WIN_H_
 
 #include <windows.h>
 
+#include <string>
+
 #include "ipc/ipc_export.h"
-#include "ipc/ipc_message_macros.h"
+#include "ipc/ipc_param_traits.h"
+
+namespace base {
+class PickleIterator;
+}  // namespace base
 
 namespace IPC {
 
+class Message;
+
 // HandleWin is a wrapper around a Windows HANDLE that can be transported
 // across Chrome IPC channels that support attachment brokering. The HANDLE will
 // be duplicated into the destination process.
 class IPC_EXPORT HandleWin {
  public:
   enum Permissions {
     // A placeholder value to be used by the receiving IPC channel, since the
     // permissions information is only used by the broker process.
     INVALID,
     // The new HANDLE will have the same permissions as the old HANDLE.
@@ skipping 20 matching lines @@
 struct IPC_EXPORT ParamTraits<HandleWin> {
   typedef HandleWin param_type;
   static void Write(Message* m, const param_type& p);
   static bool Read(const Message* m, base::PickleIterator* iter, param_type* p);
   static void Log(const param_type& p, std::string* l);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_HANDLE_WIN_H_