Add support for file URIs and extracting the file path from file URIs

runtime/lib/uri.cc

Index: runtime/lib/uri.cc
diff --git a/runtime/bin/vmservice.h b/runtime/lib/uri.cc
similarity index 53%
copy from runtime/bin/vmservice.h
copy to runtime/lib/uri.cc
index 4dcf93f704aaf7e82fc4d54ab5dbd81d2c7ee64e..e5b37606c4b02bc3d0f06a41b19e0c3787e9e11a 100644
--- a/runtime/bin/vmservice.h
+++ b/runtime/lib/uri.cc
@@ -2,16 +2,18 @@
 // 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.
 
-#ifndef BIN_VMSERVICE_H_
-#define BIN_VMSERVICE_H_
-
-#include "include/dart_api.h"
+#include "vm/bootstrap_natives.h"
+#include "vm/native_entry.h"
+#include "vm/object.h"
 
 namespace dart {
-namespace bin {
 
+DEFINE_NATIVE_ENTRY(Uri_isWindows, 0) {
+#if defined(_WIN32)
+  return Bool::True().raw();
+#else
+  return Bool::False().raw();
+#endif
+}
 
-}  // namespace bin
 }  // namespace dart
-
-#endif  // BIN_VMSERVICE_H_