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

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 439fef932015e5530f27f07b7a22f2d4cfdcc86e..01731ae92e6103580a88214751204db24b9b48d4 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -71,6 +71,7 @@
 #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"
@@ -782,6 +783,12 @@ void Node::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())