Change Page::m_mainFrame to be a Frame.

Source/core/rendering/FastTextAutosizer.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 495 matching lines @@
 
     PageInfo previousPageInfo(m_pageInfo);
     m_pageInfo.m_settingEnabled = m_document->settings()->textAutosizingEnabled();
 
     if (!m_pageInfo.m_settingEnabled || m_document->printing()) {
         m_pageInfo.m_pageNeedsAutosizing = false;
     } else {
         RenderView* renderView = m_document->renderView();
         bool horizontalWritingMode = isHorizontalWritingMode(renderView->style()->writingMode());
 
-        LocalFrame* mainFrame = m_document->page()->mainFrame();
+        LocalFrame* mainFrame = m_document->page()->deprecatedLocalMainFrame();
         IntSize frameSize = m_document->settings()->textAutosizingWindowSizeOverride();
         if (frameSize.isEmpty())
             frameSize = mainFrame->view()->unscaledVisibleContentSize(IncludeScrollbars);
         m_pageInfo.m_frameWidth = horizontalWritingMode ? frameSize.width() : frameSize.height();
 
         IntSize layoutSize = mainFrame->view()->layoutSize();
         m_pageInfo.m_layoutWidth = horizontalWritingMode ? layoutSize.width() : layoutSize.height();
 
         // Compute the base font scale multiplier based on device and accessibility settings.
         m_pageInfo.m_baseMultiplier = m_document->settings()->accessibilityFontScaleFactor();
@@ skipping 582 matching lines @@
 FastTextAutosizer::TableLayoutScope::TableLayoutScope(RenderTable* table)
     : LayoutScope(table)
 {
     if (m_textAutosizer) {
         ASSERT(m_textAutosizer->shouldHandleLayout());
         m_textAutosizer->inflateAutoTable(table);
     }
 }
 
 FastTextAutosizer::DeferUpdatePageInfo::DeferUpdatePageInfo(Page* page)
-    : m_mainFrame(page->mainFrame())
+    : m_mainFrame(page->deprecatedLocalMainFrame())
 {
     if (FastTextAutosizer* textAutosizer = m_mainFrame->document()->fastTextAutosizer()) {
         ASSERT(!textAutosizer->m_updatePageInfoDeferred);
         textAutosizer->m_updatePageInfoDeferred = true;
     }
 }
 
 FastTextAutosizer::DeferUpdatePageInfo::~DeferUpdatePageInfo()
 {
     if (FastTextAutosizer* textAutosizer = m_mainFrame->document()->fastTextAutosizer()) {
         ASSERT(textAutosizer->m_updatePageInfoDeferred);
         textAutosizer->m_updatePageInfoDeferred = false;
         textAutosizer->updatePageInfoInAllFrames();
     }
 }
 
 } // namespace WebCore