Move property tree debugging code to platform/graphics/paint/ (try #2)

third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp

Index: third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp b/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp
index 38d423b998911a6e9bd62244f8f0fe630e193b20..9ca9da31a0535c172a2cdef811196523b5df08f3 100644
--- a/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp
+++ b/third_party/WebKit/Source/platform/graphics/paint/EffectPaintPropertyNode.cpp
@@ -4,6 +4,8 @@
 
 #include "platform/graphics/paint/EffectPaintPropertyNode.h"
 
+#include "platform/graphics/paint/PropertyTreeState.h"
+
 namespace blink {
 
 EffectPaintPropertyNode* EffectPaintPropertyNode::root() {
@@ -34,4 +36,13 @@ String EffectPaintPropertyNode::toString() const {
       m_compositorElementId.primaryId, m_compositorElementId.secondaryId);
 }
 
+#if DCHECK_IS_ON()
+
+String EffectPaintPropertyNode::toTreeString() const {
+  return blink::PropertyTreeStatePrinter<blink::EffectPaintPropertyNode>()
+      .pathAsString(this);
+}
+
+#endif
+
 }  // namespace blink