Introduce NavigatorOnLine interface

Source/core/page/NavigatorOnLine.h

 /*
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "config.h"
-#include "core/svg/SVGUnknownElement.h"
+#ifndef NavigatorOnLine_h
+#define NavigatorOnLine_h
+
+#include "core/platform/network/NetworkStateNotifier.h"
 
 namespace WebCore {
 
-SVGUnknownElement::SVGUnknownElement(const QualifiedName& tagName, Document* document)
-    : SVGElement(tagName, document)
-{
+class NavigatorOnLine {

[haraken, 2013/08/20 10:28:51]

Nit: Previously you used a namespace for this kind of simple class :) Both are
fine.

[do-not-use, 2013/08/20 10:31:49]

I used a namespace first then got linking errors about having functions defined
multiple times (because I did not add a .cpp file). So I decided not to bother
and use a class with static functions.

+public:
+    static bool onLine(void*)
+    {
+        return networkStateNotifier().onLine();
+    }
+};
+
 }
 
-} // namespace WebCore
+#endif // NavigatorOnLine_h