Remove some dead scrolling paths and unused params

Source/web/WebPluginContainerImpl.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 366 matching lines @@
 void WebPluginContainerImpl::invalidate()
 {
     Widget::invalidate();
 }
 
 void WebPluginContainerImpl::invalidateRect(const WebRect& rect)
 {
     invalidateRect(static_cast<IntRect>(rect));
 }
 
-void WebPluginContainerImpl::scrollRect(int dx, int dy, const WebRect& rect)
+void WebPluginContainerImpl::scrollRect(const WebRect& rect)
 {
     Widget* parentWidget = parent();
     if (parentWidget->isFrameView()) {
         FrameView* parentFrameView = toFrameView(parentWidget);
         if (!parentFrameView->isOverlapped()) {
-            IntRect damageRect = convertToContainingWindow(static_cast<IntRect>(rect));
-            IntSize scrollDelta(dx, dy);
-            // scroll() only uses the second rectangle, clipRect, and ignores the first
-            // rectangle.
-            parent()->hostWindow()->scroll(scrollDelta, damageRect, damageRect);
+            // FIXME: parameter is unused. Remove once popups scroll like everything else.
+            static const IntRect dummy;
+            parent()->hostWindow()->scroll(dummy);
             return;
         }
     }
 
     // Use slow scrolling instead.
     invalidateRect(rect);
 }
 
 void WebPluginContainerImpl::reportGeometry()
 {
@@ skipping 503 matching lines @@
 
     return clipRect;
 }
 
 bool WebPluginContainerImpl::pluginShouldPersist() const
 {
     return m_webPlugin->shouldPersist();
 }
 
 } // namespace blink