Mac: Delete now-dead elastic overscroll code

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 225 matching lines @@
     m_settings->setReportScreenSizeInPhysicalPixelsQuirk(reportScreenSizeInPhysicalPixelsQuirk);
 }
 
 void WebSettingsImpl::setRootLayerScrolls(bool rootLayerScrolls)
 {
     m_settings->setRootLayerScrolls(rootLayerScrolls);
 }
 
 void WebSettingsImpl::setRubberBandingOnCompositorThread(bool rubberBandingOnCompositorThread)
 {
-    m_settings->setRubberBandingOnCompositorThread(rubberBandingOnCompositorThread);
 }
 
 void WebSettingsImpl::setClobberUserAgentInitialScaleQuirk(bool clobberUserAgentInitialScaleQuirk)
 {
     m_clobberUserAgentInitialScaleQuirk = clobberUserAgentInitialScaleQuirk;
 }
 
 void WebSettingsImpl::setSupportsMultipleWindows(bool supportsMultipleWindows)
 {
     m_settings->setSupportsMultipleWindows(supportsMultipleWindows);
@@ skipping 484 matching lines @@
 {
     m_mainFrameResizesAreOrientationChanges = enabled;
 }
 
 void WebSettingsImpl::setV8CacheOptions(V8CacheOptions options)
 {
     m_settings->setV8CacheOptions(static_cast<blink::V8CacheOptions>(options));
 }
 
 } // namespace blink