Prepare for removal of source_filter.gypi:

runtime/bin/file_win.cc

 // Copyright (c) 2012, 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.h"
 
-#include <fcntl.h>
-#include <io.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
+#include <fcntl.h>  // NOLINT
+#include <io.h>  // NOLINT
+#include <stdio.h>  // NOLINT
+#include <string.h>  // NOLINT
+#include <sys/stat.h>  // NOLINT
 
 #include "bin/builtin.h"
 #include "bin/log.h"
 
 class FileHandle {
  public:
   explicit FileHandle(int fd) : fd_(fd) { }
   ~FileHandle() { }
   int fd() const { return fd_; }
   void set_fd(int fd) { fd_ = fd; }
@@ skipping 237 matching lines @@
   // This is already UTF-8 encoded.
   return "\\\\";
 }
 
 
 File::StdioHandleType File::GetStdioHandleType(int fd) {
   // Treat all stdio handles as pipes. The Windows event handler and
   // socket code will handle the different handle types.
   return kPipe;
 }
+
+#endif  // defined(TARGET_OS_WINDOWS)