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

third_party/WebKit/Source/platform/graphics/paint/TransformPaintPropertyNode.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef TransformPaintPropertyNode_h
 #define TransformPaintPropertyNode_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatPoint3D.h"
 #include "platform/graphics/CompositingReasons.h"
@@ skipping 93 matching lines @@
   // The equality operator is used by FindPropertiesNeedingUpdate.h for checking
   // if a transform node has changed.
   bool operator==(const TransformPaintPropertyNode& o) const {
     return m_parent == o.m_parent && m_matrix == o.m_matrix &&
            m_origin == o.m_origin &&
            m_flattensInheritedTransform == o.m_flattensInheritedTransform &&
            m_renderingContextId == o.m_renderingContextId &&
            m_directCompositingReasons == o.m_directCompositingReasons &&
            m_compositorElementId == o.m_compositorElementId;
   }
+
+  String toTreeString() const;
 #endif
 
   String toString() const;
 
  private:
   TransformPaintPropertyNode(
       PassRefPtr<const TransformPaintPropertyNode> parent,
       const TransformationMatrix& matrix,
       const FloatPoint3D& origin,
       bool flattensInheritedTransform,
@@ skipping 17 matching lines @@
   CompositorElementId m_compositorElementId;
 };
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/PaintPrinters.h.
 void PrintTo(const TransformPaintPropertyNode&, std::ostream*);
 
 }  // namespace blink
 
 #endif  // TransformPaintPropertyNode_h