Report accurate Overscroll on handleWheel.

Source/web/WebSettingsImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. 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 57 matching lines @@
     if (m_settings->genericFontFamilySettings().updateStandard(font, script))
         m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setFixedFontFamily(const WebString& font, UScriptCode script)
 {
     if (m_settings->genericFontFamilySettings().updateFixed(font, script))
         m_settings->notifyGenericFontFamilyChange();
 }
 
+void WebSettingsImpl::setReportWheelOverscroll(bool enabled)
+{
+    m_settings->setReportWheelOverscroll(enabled);
+}
+
 void WebSettingsImpl::setForceZeroLayoutHeight(bool enabled)
 {
     m_settings->setForceZeroLayoutHeight(enabled);
 }
 
 void WebSettingsImpl::setFullscreenSupported(bool enabled)
 {
     m_settings->setFullscreenSupported(enabled);
 }
 
@@ skipping 701 matching lines @@
 {
     m_settings->setV8CacheOptions(static_cast<blink::V8CacheOptions>(options));
 }
 
 void WebSettingsImpl::setUseMobileViewportStyle(bool enabled)
 {
     m_devToolsEmulator->setUseMobileViewportStyle(enabled);
 }
 
 } // namespace blink