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

third_party/WebKit/Source/platform/graphics/paint/ClipPaintPropertyNode.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 ClipPaintPropertyNode_h
 #define ClipPaintPropertyNode_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatRoundedRect.h"
 #include "platform/graphics/paint/TransformPaintPropertyNode.h"
@@ skipping 58 matching lines @@
   }
 
   // The equality operator is used by FindPropertiesNeedingUpdate.h for checking
   // if a clip node has changed.
   bool operator==(const ClipPaintPropertyNode& o) const {
     return m_parent == o.m_parent &&
            m_localTransformSpace == o.m_localTransformSpace &&
            m_clipRect == o.m_clipRect &&
            m_directCompositingReasons == o.m_directCompositingReasons;
   }
+
+  String toTreeString() const;
 #endif
 
   String toString() const;
 
   bool hasDirectCompositingReasons() const {
     return m_directCompositingReasons != CompositingReasonNone;
   }
 
  private:
   ClipPaintPropertyNode(
@@ skipping 12 matching lines @@
   CompositingReasons m_directCompositingReasons;
 };
 
 // Redeclared here to avoid ODR issues.
 // See platform/testing/PaintPrinters.h.
 void PrintTo(const ClipPaintPropertyNode&, std::ostream*);
 
 }  // namespace blink
 
 #endif  // ClipPaintPropertyNode_h