Change old code from "unloadListnerChanged" model to new WebKit EnableSuddenT...

webkit/glue/webframe_impl.cc

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2006 Apple Computer, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1827 matching lines @@
   GraphicsContext spool(context);
 #endif
 
   DCHECK(pages_[page].x() == 0);
   // Offset to get the right square.
   spool.translate(0, -static_cast<float>(pages_[page].y()));
   frame()->view()->paint(&spool, pages_[page]);
   return true;
 }
 
-bool WebFrameImpl::HasUnloadListener() {
-  if (frame() && frame()->document()) {
-    Document* doc = frame()->document();
-    return doc->hasUnloadEventListener();
-  }
-  return false;
-}
-
 bool WebFrameImpl::IsReloadAllowingStaleData() const {
   FrameLoader* loader = frame() ? frame()->loader() : NULL;
   if (loader) {
     return WebCore::FrameLoadTypeReloadAllowingStaleData ==
            loader->policyLoadType();
   }
   return false;
 }
 
 int WebFrameImpl::PendingFrameUnloadEventCount() const {
   return frame()->eventHandler()->pendingFrameUnloadEventCount();
 }