Pass through geofencing API calls to the content layer.

public/platform/WebCircularGeofencingRegion.h

Index: public/platform/WebCircularGeofencingRegion.h
diff --git a/public/platform/WebCircularGeofencingRegion.h b/public/platform/WebCircularGeofencingRegion.h
new file mode 100644
index 0000000000000000000000000000000000000000..c87070a0449bdbf8963e9e39406c5e081f16a842
--- /dev/null
+++ b/public/platform/WebCircularGeofencingRegion.h
@@ -0,0 +1,28 @@
+// 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 WebCircularGeofencingRegion_h
+#define WebCircularGeofencingRegion_h
+
+#include "WebCommon.h"
+#include "WebString.h"
+
+namespace blink {
+
+struct WebCircularGeofencingRegion {
+    double latitude;
+    double longitude;
+    double radius;
+
+    WebCircularGeofencingRegion()
+        : latitude(0)
+        , longitude(0)
+        , radius(0)
+    {
+    }
+};
+
+} // namespace blink
+
+#endif // WebCircularGeofencingRegion_h