[webnfc] Align NFC interface with latest specification.

third_party/WebKit/Source/modules/nfc/NFCMessage.idl

Index: third_party/WebKit/Source/modules/nfc/NFCMessage.idl
diff --git a/third_party/WebKit/Source/modules/nfc/NFCMessage.idl b/third_party/WebKit/Source/modules/nfc/NFCMessage.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5cea9c7033af49926cd83b571aa2f968771579ac
--- /dev/null
+++ b/third_party/WebKit/Source/modules/nfc/NFCMessage.idl
@@ -0,0 +1,10 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// https://w3c.github.io/web-nfc/#the-nfcmessage-dictionary
+
+dictionary NFCMessage {
+    sequence<NFCRecord> data;
+    USVString url;
+};