Add paint property path printers and test them

third_party/WebKit/Source/core/paint/PaintPropertyTreePrinter.cpp

 // Copyright 2016 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 "core/paint/PaintPropertyTreePrinter.h"
 
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/LayoutPart.h"
 #include "core/layout/LayoutView.h"
@@ skipping 23 matching lines @@
             return "";
 
         if (!m_nodeToDebugString.contains(rootNode))
             addPropertyNode(rootNode, "root");
 
         StringBuilder stringBuilder;
         addAllPropertyNodes(stringBuilder, rootNode);
         return stringBuilder.toString();
     }
 
+    String pathAsString(const PropertyTreeNode* lastNode)
+    {
+        const PropertyTreeNode* node = lastNode;
+        while (!node->isRoot()) {
+            addPropertyNode(node, "");
+            node = node->parent();
+        }
+        addPropertyNode(node, "root");
+
+        StringBuilder stringBuilder;
+        addAllPropertyNodes(stringBuilder, node);
+        return stringBuilder.toString();
+    }
+
     void addPropertyNode(const PropertyTreeNode* node, String debugInfo)
     {
         m_nodeToDebugString.set(node, debugInfo);
     }
 
 private:
     using Traits = PropertyTreePrinterTraits<PropertyTreeNode>;
 
     void collectPropertyNodes(const FrameView& frameView)
     {
@@ skipping 487 matching lines @@
 String effectPropertyTreeAsString(const blink::FrameView& rootFrame)
 {
     return blink::PropertyTreePrinter<blink::EffectPaintPropertyNode>().treeAsString(rootFrame);
 }
 
 String scrollPropertyTreeAsString(const blink::FrameView& rootFrame)
 {
     return blink::PropertyTreePrinter<blink::ScrollPaintPropertyNode>().treeAsString(rootFrame);
 }
 
+String transformPaintPropertyPathAsString(const blink::TransformPaintPropertyNode* node)
+{
+    return blink::PropertyTreePrinter<blink::TransformPaintPropertyNode>().pathAsString(node);
+}
+
+String clipPaintPropertyPathAsString(const blink::ClipPaintPropertyNode* node)
+{
+    return blink::PropertyTreePrinter<blink::ClipPaintPropertyNode>().pathAsString(node);
+}
+
+String effectPaintPropertyPathAsString(const blink::EffectPaintPropertyNode* node)
+{
+    return blink::PropertyTreePrinter<blink::EffectPaintPropertyNode>().pathAsString(node);
+}
+
+String scrollPaintPropertyPathAsString(const blink::ScrollPaintPropertyNode* node)
+{
+    return blink::PropertyTreePrinter<blink::ScrollPaintPropertyNode>().pathAsString(node);
+}
+
+void showPaintPropertyPath(const blink::TransformPaintPropertyNode* node)
+{
+    fprintf(stderr, "%s\n", transformPaintPropertyPathAsString(node).utf8().data());
+}
+
+void showPaintPropertyPath(const blink::ClipPaintPropertyNode* node)
+{
+    fprintf(stderr, "%s\n", clipPaintPropertyPathAsString(node).utf8().data());
+}
+
+void showPaintPropertyPath(const blink::EffectPaintPropertyNode* node)
+{
+    fprintf(stderr, "%s\n", effectPaintPropertyPathAsString(node).utf8().data());
+}
+
+void showPaintPropertyPath(const blink::ScrollPaintPropertyNode* node)
+{
+    fprintf(stderr, "%s\n", scrollPaintPropertyPathAsString(node).utf8().data());
+}
+
 String paintPropertyTreeGraph(const blink::FrameView& frameView)
 {
     blink::PaintPropertyTreeGraphBuilder builder;
     StringBuilder stringBuilder;
     builder.generateTreeGraph(frameView, stringBuilder);
     return stringBuilder.toString();
 }
 
 #endif