win: Get Crashpad compiling under VS2015

client/crashpad_client_win.cc

 // 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 100 matching lines @@
       reinterpret_cast<WinVMAddress>(&g_exception_information);
 
   ServerToClientMessage response = {0};
 
   if (!SendToCrashHandlerServer(
           base::UTF8ToUTF16(ipc_port), message, &response)) {
     return false;
   }
 
   // The server returns these already duplicated to be valid in this process.
-  g_signal_exception =
-      reinterpret_cast<HANDLE>(response.registration.request_report_event);
+  g_signal_exception = reinterpret_cast<HANDLE>(
+      static_cast<uintptr_t>(response.registration.request_report_event));
   return true;
 }
 
 bool CrashpadClient::UseHandler() {
   if (g_signal_exception == INVALID_HANDLE_VALUE)
     return false;
   // In theory we could store the previous handler but it is not clear what
   // use we have for it.
   SetUnhandledExceptionFilter(&UnhandledExceptionHandler);
   return true;
 }
 
 }  // namespace crashpad