Allow SVG images to not taint the canvas with drawImage/drawPattern

Source/core/rendering/svg/RenderSVGRoot.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) Research In Motion Limited 2011. 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
@@ skipping 22 matching lines @@
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/LayoutRepainter.h"
 #include "core/rendering/RenderPart.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/svg/RenderSVGResourceContainer.h"
 #include "core/rendering/svg/SVGRenderingContext.h"
 #include "core/rendering/svg/SVGResources.h"
 #include "core/rendering/svg/SVGResourcesCache.h"
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGSVGElement.h"
+#include "core/svg/graphics/SVGImage.h"
 
 using namespace std;
 
 namespace WebCore {
 
 RenderSVGRoot::RenderSVGRoot(SVGElement* node)
     : RenderReplaced(node)
     , m_objectBoundingBoxValid(false)
     , m_isLayoutSizeChanged(false)
     , m_needsBoundariesOrTransformUpdate(true)
@@ skipping 50 matching lines @@
     // If our intrinsic size is in percentage units, return those to the caller through the intrinsicSize. Notify the caller
     // about the special situation, by setting isPercentageIntrinsicSize=true, so it knows how to interpret the return values.
     if (intrinsicWidthAttribute.isPercent() && intrinsicHeightAttribute.isPercent()) {
         isPercentageIntrinsicSize = true;
         intrinsicSize = FloatSize(intrinsicWidthAttribute.percent(), intrinsicHeightAttribute.percent());
     }
 }
 
 bool RenderSVGRoot::isEmbeddedThroughSVGImage() const
 {
-    if (!node())
-        return false;
-
-    Frame* frame = node()->document()->frame();
-    if (!frame)
-        return false;
-
-    // Test whether we're embedded through an img.
-    if (!frame->page())
-        return false;
-
-    ChromeClient* chromeClient = frame->page()->chrome().client();
-    if (!chromeClient || !chromeClient->isSVGImageChromeClient())
-        return false;
-
-    return true;
+    return SVGImage::isInSVGImage(toSVGSVGElement(node()));
 }
 
 bool RenderSVGRoot::isEmbeddedThroughFrameContainingSVGDocument() const
 {
     if (!node())
         return false;
 
     Frame* frame = node()->document()->frame();
     if (!frame)
         return false;
@@ skipping 343 matching lines @@
 {
     RenderObject* svgRoot = resource->parent();
     while (svgRoot && !svgRoot->isSVGRoot())
         svgRoot = svgRoot->parent();
     if (!svgRoot)
         return;
     toRenderSVGRoot(svgRoot)->m_resourcesNeedingToInvalidateClients.add(resource);
 }
 
 }