Explicit management of FrameSelection availability

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 286 matching lines @@
 void FrameLoader::clear()
 {
     // clear() is called during (Local)Frame detachment or when
     // reusing a FrameLoader by putting a new Document within it
     // (DocumentLoader::ensureWriter().)
     if (m_stateMachine.creatingInitialEmptyDocument())
         return;
 
     m_frame->editor().clear();
     m_frame->document()->removeFocusedElementOfSubtree(m_frame->document());
-    m_frame->selection().prepareForDestruction();
     m_frame->eventHandler().clear();
     if (m_frame->view())
         m_frame->view()->clear();
 
     m_frame->script().enableEval();
 
     m_frame->navigationScheduler().cancel();
 
     m_checkTimer.stop();
 
@@ skipping 1306 matching lines @@
     tracedValue->setString("documentLoaderURL", m_documentLoader ? m_documentLoader->url() : String());
     return tracedValue;
 }
 
 inline void FrameLoader::takeObjectSnapshot() const
 {
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID("loading", "FrameLoader", this, toTracedValue());
 }
 
 } // namespace blink