Remove almost all of Oilpan

sky/engine/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3123 matching lines @@
 {
     Page* page = this->page();
     if (!page)
         return false;
     if (!page->focusController().isActive() || !page->focusController().isFocused())
         return false;
     Frame* focusedFrame = page->focusController().focusedFrame();
     return focusedFrame && focusedFrame == frame();
 }
 
-void Document::clearWeakMembers(Visitor* visitor)
-{
-}
-
 v8::Handle<v8::Object> Document::wrap(v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     ASSERT(!DOMDataStore::containsWrapperNonTemplate(this, isolate));
 
     const WrapperTypeInfo* wrapperType = wrapperTypeInfo();
 
     if (frame() && frame()->script().initializeMainWorld()) {
         // initializeMainWorld may have created a wrapper for the object, retry from the start.
         v8::Handle<v8::Object> wrapper = DOMDataStore::getWrapperNonTemplate(this, isolate);
         if (!wrapper.IsEmpty())
@@ skipping 20 matching lines @@
 using namespace blink;
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (WeakDocumentSet::const_iterator it = set.begin(); it != set.end(); ++it) {
         fprintf(stderr, "- Document %p URL: %s\n", *it, (*it)->url().string().utf8().data());
     }
 }
 #endif