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 b46b56702d5e64161d98f1c21b3b79e0571a3ea7..fef54e2a56978454ae3c735280176f305b3a4677 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"
@@ -83,6 +84,7 @@
 #include "core/platform/Partitions.h"
 #include "core/rendering/FlowThreadController.h"
 #include "core/rendering/RenderBox.h"
+#include "core/svg/graphics/SVGImage.h"
 #include "wtf/HashSet.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCountedLeakCounter.h"
@@ -782,6 +784,11 @@ void Node::recalcDistribution()
     clearChildNeedsDistributionRecalc();
 }
 
+void Node::setIsLink(bool isLink)
+{
+    setFlag(isLink && !SVGImage::isInSVGImage(toElement(this)), IsLinkFlag);
+}
+
 void Node::markAncestorsWithChildNeedsDistributionRecalc()
 {
     for (Node* node = this; node && !node->childNeedsDistributionRecalc(); node = node->parentOrShadowHostNode())