Replace RenderArena with PartitionAlloc.

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 50 matching lines @@
 #include "RuntimeEnabledFeatures.h"
 #include "core/page/Settings.h"
 #include "core/page/animation/AnimationController.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/platform/FileSystem.h"
 #include "core/platform/Logging.h"
 #include "core/platform/SharedBuffer.h"
 #include "core/platform/Widget.h"
 #include "core/platform/network/NetworkStateNotifier.h"
 #include "core/plugins/PluginData.h"
-#include "core/rendering/RenderArena.h"
 #include "core/rendering/RenderTheme.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/RenderWidget.h"
 #include "core/storage/StorageArea.h"
 #include "core/storage/StorageNamespace.h"
 #include "weborigin/SchemeRegistry.h"
 #include "wtf/HashMap.h"
 #include "wtf/RefCountedLeakCounter.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/Base64.h"
@@ skipping 100 matching lines @@
     if (m_scrollingCoordinator)
         m_scrollingCoordinator->pageDestroyed();
 
     backForward()->close();
 
 #ifndef NDEBUG
     pageCounter.decrement();
 #endif
 }
 
-ArenaSize Page::renderTreeSize() const
-{
-    ArenaSize total(0, 0);
-    for (Frame* frame = mainFrame(); frame; frame = frame->tree()->traverseNext()) {
-        if (!frame->document())
-            continue;
-        if (RenderArena* arena = frame->document()->renderArena()) {
-            total.treeSize += arena->totalRenderArenaSize();
-            total.allocated += arena->totalRenderArenaAllocatedBytes();
-        }
-    }
-    return total;
-}
-
 ViewportArguments Page::viewportArguments() const
 {
     return mainFrame() && mainFrame()->document() ? mainFrame()->document()->viewportArguments() : ViewportArguments();
 }
 
 bool Page::autoscrollInProgress() const
 {
     return m_autoscrollController->autoscrollInProgress();
 }
 
@@ skipping 651 matching lines @@
     , dragClient(0)
     , inspectorClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore