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

Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 53 matching lines @@
 #include "core/dom/TextEvent.h"
 #include "core/dom/TouchEvent.h"
 #include "core/dom/TreeScopeAdopter.h"
 #include "core/dom/UIEvent.h"
 #include "core/dom/UserActionElementSet.h"
 #include "core/dom/WheelEvent.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/dom/shadow/InsertionPoint.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/htmlediting.h"
+#include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/HTMLStyleElement.h"
 #include "core/html/RadioNodeList.h"
 #include "core/inspector/InspectorCounters.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/platform/Partitions.h"
@@ skipping 691 matching lines @@
     }
 
     for (ShadowRoot* root = youngestShadowRoot(); root; root = root->olderShadowRoot()) {
         if (root->childNeedsDistributionRecalc())
             root->recalcDistribution();
     }
 
     clearChildNeedsDistributionRecalc();
 }
 
+void Node::setIsLink(bool isLink)
+{
+    ASSERT(!isLink || !mustProhibitLinks(toElement(this)));
+    setFlag(isLink, IsLinkFlag);
+}
+
 void Node::markAncestorsWithChildNeedsDistributionRecalc()
 {
     for (Node* node = this; node && !node->childNeedsDistributionRecalc(); node = node->parentOrShadowHostNode())
         node->setChildNeedsDistributionRecalc();
     if (document()->childNeedsDistributionRecalc())
         document()->scheduleStyleRecalc();
 }
 
 inline void Node::setStyleChange(StyleChangeType changeType)
 {
@@ skipping 1967 matching lines @@
         node->showTreeForThis();
 }
 
 void showNodePath(const WebCore::Node* node)
 {
     if (node)
         node->showNodePathForThis();
 }
 
 #endif