Add the first very basic bits of a geofencing API.

Source/modules/geolocation/GeofencingRegion.h

Index: Source/modules/geolocation/GeofencingRegion.h
diff --git a/Source/modules/geolocation/GeofencingRegion.h b/Source/modules/geolocation/GeofencingRegion.h
new file mode 100644
index 0000000000000000000000000000000000000000..6a0256ee8f88fb666deb74fde13a0d42473bca39
--- /dev/null
+++ b/Source/modules/geolocation/GeofencingRegion.h
@@ -0,0 +1,32 @@
+// 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 GeofencingRegion_h
+#define GeofencingRegion_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "platform/heap/Handle.h"
+#include "wtf/text/WTFString.h"
+
+namespace WebCore {
+
+class GeofencingRegion : public GarbageCollectedFinalized<GeofencingRegion>, public ScriptWrappable {
+    WTF_MAKE_NONCOPYABLE(GeofencingRegion);
+public:
+    virtual ~GeofencingRegion() { }
+
+    String id() const { return m_id; }
+
+    virtual void trace(Visitor*) { }
+
+protected:
+    GeofencingRegion(const String& id) : m_id(id) { }
+
+private:
+    String m_id;
+};
+
+} // namespace WebCore
+
+#endif