If a move has matching target/destination, signal the event as create or delete.

runtime/bin/file_system_watcher_win.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "bin/file_system_watcher.h"
 #include "bin/eventhandler.h"
 
@@ skipping 65 matching lines @@
   intptr_t max_count = available / kEventSize + 1;
   Dart_Handle events = Dart_NewList(max_count);
   uint8_t* buffer = new uint8_t[available];
   intptr_t bytes = dir->Read(buffer, available);
   intptr_t offset = 0;
   intptr_t i = 0;
   while (offset < bytes) {
     FILE_NOTIFY_INFORMATION* e =
         reinterpret_cast<FILE_NOTIFY_INFORMATION*>(buffer + offset);
 
-    Dart_Handle event = Dart_NewList(3);
+    Dart_Handle event = Dart_NewList(4);
     int mask = 0;
     if (e->Action == FILE_ACTION_ADDED) mask |= kCreate;
     if (e->Action == FILE_ACTION_REMOVED) mask |= kDelete;
     if (e->Action == FILE_ACTION_MODIFIED) mask |= kModifyContent;
     if (e->Action == FILE_ACTION_RENAMED_OLD_NAME) mask |= kMove;
     if (e->Action == FILE_ACTION_RENAMED_NEW_NAME) mask |= kMove;
     Dart_ListSetAt(event, 0, Dart_NewInteger(mask));
     // Move events come in pairs. Just 'enable' by default.
     Dart_ListSetAt(event, 1, Dart_NewInteger(1));
     Dart_ListSetAt(event, 2, Dart_NewStringFromUTF16(
         reinterpret_cast<uint16_t*>(e->FileName), e->FileNameLength / 2));
-
+    Dart_ListSetAt(event, 3, Dart_NewBoolean(true));
     Dart_ListSetAt(events, i, event);
     i++;
     if (e->NextEntryOffset == 0) break;
     offset += e->NextEntryOffset;
   }
   delete[] buffer;
   return events;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)