Return Frame&, not Frame* from RenderView::frame()

Source/core/rendering/RenderView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * 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,
@@ skipping 856 matching lines @@
 
 bool RenderView::printing() const
 {
     return document().printing();
 }
 
 bool RenderView::shouldUsePrintingLayout() const
 {
     if (!printing() || !m_frameView)
         return false;
-    return m_frameView->frame()->shouldUsePrintingLayout();
+    return m_frameView->frame().shouldUsePrintingLayout();
 }
 
 size_t RenderView::getRetainedWidgets(Vector<RenderWidget*>& renderWidgets)
 {
     size_t size = m_widgets.size();
 
     renderWidgets.reserveCapacity(size);
 
     RenderWidgetSet::const_iterator end = m_widgets.end();
     for (RenderWidgetSet::const_iterator it = m_widgets.begin(); it != end; ++it) {
@@ skipping 115 matching lines @@
     if (hasColumns() && !style()->hasInlineColumnAxis()) {
         if (int pageLength = m_frameView->pagination().pageLength)
             height = pageLength;
     }
 
     return height;
 }
 
 float RenderView::zoomFactor() const
 {
-    return m_frameView->frame()->pageZoomFactor();
+    return m_frameView->frame().pageZoomFactor();
 }
 
 void RenderView::pushLayoutState(RenderObject* root)
 {
     ASSERT(m_layoutStateDisableCount == 0);
     ASSERT(m_layoutState == 0);
 
     m_layoutState = new LayoutState(root);
 }
 
@@ skipping 82 matching lines @@
     if (!m_intervalArena)
         m_intervalArena = IntervalArena::create();
     return m_intervalArena.get();
 }
 
 bool RenderView::backgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const
 {
     // FIXME: Remove this main frame check. Same concept applies to subframes too.
     Page* page = document().page();
     Frame* mainFrame = page ? page->mainFrame() : 0;
-    if (!m_frameView || m_frameView->frame() != mainFrame)
+    if (!m_frameView || &m_frameView->frame() != mainFrame)
         return false;
 
     return m_frameView->hasOpaqueBackground();
 }
 
 FragmentationDisabler::FragmentationDisabler(RenderObject* root)
 {
     RenderView* renderView = root->view();
     ASSERT(renderView);
 
@@ skipping 24 matching lines @@
 #endif
 
     if (layoutState)
         layoutState->m_isPaginated = m_fragmenting;
 
     if (m_flowThreadState != RenderObject::NotInsideFlowThread)
         m_root->setFlowThreadStateIncludingDescendants(m_flowThreadState);
 }
 
 } // namespace WebCore