[svg] in img element doesn't render correctly when height is changed dynamically.

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 260 matching lines @@
     context->translate(destOffset.x(), destOffset.y());
     context->scale(scale);
 
     FrameView* view = frameView();
     view->resize(containerSize());
 
     if (view->needsLayout())
         view->layout();
 
     view->paint(context, enclosingIntRect(srcRect));
+    ASSERT(!view->needsLayout());
 
     if (requiresTransparencyLayer)
         context->endLayer();
 
     stateSaver.restore();
 
     if (imageObserver())
         imageObserver()->didDraw(this);
 
     // Start any (SMIL) animations if needed. This will restart or continue
@@ skipping 130 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 }