OverscrollGlow for mainThread-{BLINK CHANGES}

Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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.
@@ skipping 279 matching lines @@
     ASSERT(frame->document());
     Fullscreen::fullyExitFullscreen(*frame->document());
 
     WebViewImpl* newView = toWebViewImpl(
         m_webView->client()->createView(WebLocalFrameImpl::fromFrame(frame), WrappedResourceRequest(r.resourceRequest()), features, r.frameName(), policy, shouldSendReferrer == NeverSendReferrer));
     if (!newView)
         return nullptr;
     return newView->page();
 }
 
+void ChromeClientImpl::didOverscroll(const FloatSize& unusedDelta, const FloatSize& accumulatedRootOverScroll, const FloatPoint& position, const FloatSize& velocity)
+{
+    if (!m_webView->client())
+        return;
+
+    m_webView->client()->didOverscroll(unusedDelta, accumulatedRootOverScroll, position, velocity);
+}
+
 void ChromeClientImpl::show(NavigationPolicy navigationPolicy)
 {
     if (m_webView->client())
         m_webView->client()->show(effectiveNavigationPolicy(navigationPolicy, m_windowFeatures));
 }
 
 void ChromeClientImpl::setToolbarsVisible(bool value)
 {
     m_windowFeatures.toolBarVisible = value;
 }
@@ skipping 632 matching lines @@
 }
 
 void ChromeClientImpl::notifyPopupOpeningObservers() const
 {
     const Vector<PopupOpeningObserver*> observers(m_popupOpeningObservers);
     for (const auto& observer : observers)
         observer->willOpenPopup();
 }
 
 } // namespace blink