Add WebAuthn bindings and client interface.

third_party/WebKit/Source/modules/webauth/WebAuthentication.cpp

+// Copyright 2016 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.
+
+#include "modules/webauth/WebAuthentication.h"
+
+#include "bindings/core/v8/ScriptPromise.h"
+
+namespace blink {
+
+WebAuthentication::WebAuthentication(LocalFrame& frame) {}
+
+WebAuthentication::~WebAuthentication() {}
+
+void WebAuthentication::dispose() {}
+
+ScriptPromise WebAuthentication::makeCredential(
+    ScriptState* scriptState,
+    const RelyingPartyAccount& accountInformation,
+    const HeapVector<ScopedCredentialParameters> cryptoParameters,
+    const BufferSource& attestationChallenge,
+    ScopedCredentialOptions& options) {
+  NOTREACHED();
+  return ScriptPromise();
+}
+
+ScriptPromise WebAuthentication::getAssertion(
+    ScriptState* scriptState,
+    const BufferSource& assertionChallenge,
+    const AuthenticationAssertionOptions& options) {
+  NOTREACHED();
+  return ScriptPromise();
+}
+
+}  // namespace blink