[webnfc] Step 2. Add IDL stubs for NFCRecord, NFCPushOptions, NFCWatchOptions

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

Index: third_party/WebKit/Source/modules/nfc/NFCRecord.idl
diff --git a/third_party/WebKit/Source/modules/nfc/NFCRecord.idl b/third_party/WebKit/Source/modules/nfc/NFCRecord.idl
new file mode 100644
index 0000000000000000000000000000000000000000..22cd4e989b44821d8930b9f3a5466cf5948e195f
--- /dev/null
+++ b/third_party/WebKit/Source/modules/nfc/NFCRecord.idl
@@ -0,0 +1,15 @@
+// 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/index.html#the-nfcrecord-dictionary
+
+enum NFCRecordType { "empty", "text", "url", "json", "opaque" };
+
+[
+   RuntimeEnabled=WebNFC,
+] dictionary NFCRecord {
+    NFCRecordType kind;  // based on TNF + JSON.
+    USVString type;  // IANA media type, with parameters.
+    any data;  // null, string (text, url), Object (json), ArrayBuffer.
+};