win: Add HandleToInt() and IntToHandle()

util/win/registration_protocol_win.h

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 75 matching lines @@
     kShutdown,
   } type;
 
   union {
     RegistrationRequest registration;
     ShutdownRequest shutdown;
   };
 };
 
 //! \brief  A client registration response.
-//!
-//! See <a
-//! href="https://msdn.microsoft.com/en-us/library/windows/desktop/aa384203">Interprocess
-//! Communication Between 32-bit and 64-bit Applications</a> for details on
-//! communicating handle values between processes of varying bitness.
 struct RegistrationResponse {
   //! \brief An event `HANDLE`, valid in the client process, that should be
   //!     signaled to request a crash report. 64-bit clients should convert the
   //!     value to a `HANDLE` using sign-extension.
   uint32_t request_crash_dump_event;
 
   //! \brief An event `HANDLE`, valid in the client process, that should be
   //!     signaled to request a non-crashing dump be taken. 64-bit clients
   //!     should convert the value to `HANDLEEE` using sign-extension.
   uint32_t request_non_crash_dump_event;
@@ skipping 18 matching lines @@
 //! CrashpadClient::SetHandler().
 //!
 //! \sa CrashpadClient::SetHandler()
 bool SendToCrashHandlerServer(const base::string16& pipe_name,
                               const ClientToServerMessage& message,
                               ServerToClientMessage* response);
 
 }  // namespace crashpad
 
 #endif  // CRASHPAD_UTIL_WIN_REGISTRATION_PROTOCOL_WIN_H_