WIP: Construct SPV2's scroll paint property tree

third_party/WebKit/Source/platform/testing/PaintPrinters.cpp

 // 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.
 
 #include "platform/testing/PaintPrinters.h"
 
 #include "platform/graphics/paint/PaintChunk.h"
 #include "platform/graphics/paint/PaintChunkProperties.h"
 #include <iomanip> // NOLINT
 #include <ostream> // NOLINT
@@ skipping 82 matching lines @@
     }
 
     if (properties.effect) {
         if (printedProperty)
             *os << ", ";
         *os << "effect=";
         PrintTo(*properties.effect, os);
         printedProperty = true;
     }
 
+    if (properties.scroll) {
+        if (printedProperty)
+            *os << ", ";
+        *os << "scroll=";
+        PrintTo(*properties.scroll, os);
+        printedProperty = true;
+    }
+
     if (printedProperty)
         *os << ", ";
     *os << "backfaceHidden=" << properties.backfaceHidden;
 
     *os << ")";
 }
 
 void PrintTo(const TransformPaintPropertyNode& transformPaintProperty, std::ostream* os)
 {
     *os << "TransformPaintPropertyNode(matrix=";
     PrintTo(transformPaintProperty.matrix(), os);
     *os << ", origin=";
     PrintTo(transformPaintProperty.origin(), os);
     *os << ")";
 }
 
 void PrintTo(const EffectPaintPropertyNode& effect, std::ostream* os)
 {
     *os << "EffectPaintPropertyNode(opacity=" << effect.opacity() << ")";
 }
 
+void PrintTo(const ScrollPaintPropertyNode& node, std::ostream* os)
+{
+    *os << "ScrollPaintPropertyNode(clip=";
+    PrintTo(node.clip(), os);
+    *os << ", bounds=";
+    PrintTo(node.bounds(), os);
+    *os << ", userScrollableHorizontal=" << node.userScrollableHorizontal();
+    *os << ", userScrollableVertical=" << node.userScrollableVertical();
+    *os << ", scrollOffsetTranslation=";
+    PrintPointer(node.scrollOffsetTranslation(), *os);
+    *os << ", parent=";
+    PrintPointer(node.parent(), *os);
+    *os << ")";
+}
+
 } // namespace blink