Use "Dictionary" for PositionOptions instead of Custom binding

Source/modules/geolocation/PositionOptions.cpp

+// 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.
+
+#include "config.h"
+#include "modules/geolocation/PositionOptions.h"
+
+#include "bindings/v8/Dictionary.h"
+#include <limits.h>
+
+namespace WebCore {
+
+PositionOptions* PositionOptions::create(const Dictionary& options)
+{
+    return new PositionOptions(options);
+}
+
+PositionOptions::PositionOptions(const Dictionary& options)
+    : m_highAccuracy(false)
+    , m_maximumAge(0)
+    , m_timeout(std::numeric_limits<unsigned>::max())
+{
+    if (options.hasProperty("enableHighAccuracy"))
+        options.get("enableHighAccuracy", m_highAccuracy);
+    if (options.hasProperty("maximumAge")) {
+        double maximumAge;
+        options.get("maximumAge", maximumAge);
+        if (maximumAge < 0)
+            m_maximumAge = 0;
+        else if (maximumAge > std::numeric_limits<unsigned>::max())
+            m_maximumAge = std::numeric_limits<unsigned>::max();
+        else
+            m_maximumAge = maximumAge;
+    }
+    if (options.hasProperty("timeout")) {
+        double timeout;
+        options.get("timeout", timeout);
+        if (timeout < 0)
+            m_timeout = 0;
+        else if (timeout > std::numeric_limits<unsigned>::max())
+            m_timeout = std::numeric_limits<unsigned>::max();
+        else
+            m_timeout = timeout;
+    }
+}
+
+} // namespace WebCore