[svg] Reset the initial view properly in SVGImage.

Source/core/svg/SVGSVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2014 Google, Inc.
  *
  * 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.
@@ skipping 694 matching lines @@
     // Any view specification attributes included on the given ‘view’ element override the corresponding view specification
     // attributes on the closest ancestor ‘svg’ element.
     if (isSVGViewElement(anchorNode)) {
         SVGViewElement& viewElement = toSVGViewElement(*anchorNode);
 
         if (SVGSVGElement* svg = viewElement.ownerSVGElement()) {
             svg->inheritViewAttributes(&viewElement);
 
             if (RenderObject* renderer = svg->renderer())
                 markForLayoutAndParentResourceInvalidation(renderer);
+
+            return;
         }
     }
 
+    // If we previously had a view and didn't get a new one, we need to
+    // layout again.
+    if (renderer && hadUseCurrentView)
+        markForLayoutAndParentResourceInvalidation(renderer);
+
     // FIXME: We need to decide which <svg> to focus on, and zoom to it.
     // FIXME: We need to actually "highlight" the viewTarget(s).
 }
 
 void SVGSVGElement::inheritViewAttributes(SVGViewElement* viewElement)
 {
     SVGViewSpec* view = currentView();
     m_useCurrentView = true;
 
     if (viewElement->hasAttribute(SVGNames::viewBoxAttr))
@@ skipping 35 matching lines @@
     visitor->trace(m_width);
     visitor->trace(m_height);
     visitor->trace(m_translation);
     visitor->trace(m_timeContainer);
     visitor->trace(m_viewSpec);
     SVGGraphicsElement::trace(visitor);
     SVGFitToViewBox::trace(visitor);
 }
 
 } // namespace blink