Change Page::m_mainFrame to be a Frame.

Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 48 matching lines @@
 SVGImage::SVGImage(ImageObserver* observer)
     : Image(observer)
 {
 }
 
 SVGImage::~SVGImage()
 {
     if (m_page) {
         // Store m_page in a local variable, clearing m_page, so that SVGImageChromeClient knows we're destructed.
         OwnPtrWillBeRawPtr<Page> currentPage = m_page.release();
-        currentPage->mainFrame()->loader().frameDetached(); // Break both the loader and view references to the frame
+        toLocalFrame(currentPage->mainFrame())->loader().frameDetached(); // Break both the loader and view references to the frame
         currentPage->willBeDestroyed();
     }
 
     // Verify that page teardown destroyed the Chrome
     ASSERT(!m_chromeClient || !m_chromeClient->image());
 }
 
 bool SVGImage::isInSVGImage(const Node* node)
 {
     ASSERT(node);
 
     Page* page = node->document().page();
     if (!page)
         return false;
 
     return page->chrome().client().isSVGImageChromeClient();
 }
 
 bool SVGImage::currentFrameHasSingleSecurityOrigin() const
 {
     if (!m_page)
         return true;
 
-    LocalFrame* frame = m_page->mainFrame();
+    LocalFrame* frame = toLocalFrame(m_page->mainFrame());
 
     RELEASE_ASSERT(frame->document()->loadEventFinished());
 
     SVGSVGElement* rootElement = frame->document()->accessSVGExtensions().rootElement();
     if (!rootElement)
         return true;
 
     // Don't allow foreignObject elements or images that are not known to be
     // single-origin since these can leak cross-origin information.
     ComposedTreeWalker walker(rootElement);
@@ skipping 12 matching lines @@
 
     // Because SVG image rendering disallows external resources and links, these
     // images effectively are restricted to a single security origin.
     return true;
 }
 
 static SVGSVGElement* svgRootElement(Page* page)
 {
     if (!page)
         return 0;
-    LocalFrame* frame = page->mainFrame();
+    LocalFrame* frame = toLocalFrame(page->mainFrame());
     return frame->document()->accessSVGExtensions().rootElement();
 }
 
 void SVGImage::setContainerSize(const IntSize& size)
 {
     if (!usesContainerSize())
         return;
 
     SVGSVGElement* rootElement = svgRootElement(m_page.get());
     if (!rootElement)
@@ skipping 176 matching lines @@
     if (!rootElement)
         return 0;
     return toRenderBox(rootElement->renderer());
 }
 
 FrameView* SVGImage::frameView() const
 {
     if (!m_page)
         return 0;
 
-    return m_page->mainFrame()->view();
+    return toLocalFrame(m_page->mainFrame())->view();
 }
 
 void SVGImage::computeIntrinsicDimensions(Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
 {
     SVGSVGElement* rootElement = svgRootElement(m_page.get());
     if (!rootElement)
         return;
 
     intrinsicWidth = rootElement->intrinsicWidth();
     intrinsicHeight = rootElement->intrinsicHeight();
@@ skipping 29 matching lines @@
         return;
     rootElement->pauseAnimations();
     rootElement->setCurrentTime(0);
 }
 
 bool SVGImage::hasAnimations() const
 {
     SVGSVGElement* rootElement = svgRootElement(m_page.get());
     if (!rootElement)
         return false;
-    return rootElement->timeContainer()->hasAnimations() || m_page->mainFrame()->document()->timeline().hasPendingUpdates();
+    return rootElement->timeContainer()->hasAnimations() || toLocalFrame(m_page->mainFrame())->document()->timeline().hasPendingUpdates();
 }
 
 bool SVGImage::dataChanged(bool allDataReceived)
 {
     TRACE_EVENT0("webkit", "SVGImage::dataChanged");
 
     // Don't do anything if is an empty image.
     if (!data()->size())
         return true;
 
@@ skipping 41 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 }