Expose navigator.connect client side API in blink.

Source/modules/navigatorconnect/NavigatorConnect.h

+// Copyright 2014 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.
+
+#ifndef NavigatorConnect_h
+#define NavigatorConnect_h
+
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class Navigator;
+class ScriptPromise;
+class ScriptState;
+
+class NavigatorConnect {
+public:
+    static ScriptPromise connect(ScriptState*, Navigator&, const String& url);
+};
+
+} // namespace blink
+
+#endif // NavigatorConnect_h