[Editing] Add SelectionTemplate::showTreeForThis()

third_party/WebKit/Source/core/editing/VisibleSelection.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 759 matching lines @@
          selectionWrapper1.extent() == selectionWrapper2.extent();
 }
 
 template <typename Strategy>
 bool VisibleSelectionTemplate<Strategy>::operator==(
     const VisibleSelectionTemplate<Strategy>& other) const {
   return equalSelectionsAlgorithm<Strategy>(*this, other);
 }
 
 #ifndef NDEBUG
+template <typename Strategy>
+void VisibleSelectionTemplate<Strategy>::showTreeForStartAndEnd(
+    const PositionTemplate<Strategy>& start,
+    const PositionTemplate<Strategy>& end) {
+  if (!start.anchorNode())
+    return;
+  LOG(INFO) << "\n"
+            << start.anchorNode()
+                   ->toMarkedTreeString(start.anchorNode(), "S",
+                                        end.anchorNode(), "E")
+                   .utf8()
+                   .data()
+            << "start: " << start.toAnchorTypeAndOffsetString().utf8().data()
+            << "\n"
+            << "end: " << end.toAnchorTypeAndOffsetString().utf8().data();
+}
 
 template <typename Strategy>
 void VisibleSelectionTemplate<Strategy>::showTreeForThis() const {
-  if (!start().anchorNode())
-    return;
-  LOG(INFO) << "\n"
-            << start()
-                   .anchorNode()
-                   ->toMarkedTreeString(start().anchorNode(), "S",
-                                        end().anchorNode(), "E")
-                   .utf8()
-                   .data()
-            << "start: " << start().toAnchorTypeAndOffsetString().utf8().data()
-            << "\n"
-            << "end: " << end().toAnchorTypeAndOffsetString().utf8().data();
+  VisibleSelectionTemplate<Strategy>::showTreeForStartAndEnd(start(), end());
 }
-
 #endif
 
 template <typename Strategy>
 void VisibleSelectionTemplate<Strategy>::PrintTo(
     const VisibleSelectionTemplate<Strategy>& selection,
     std::ostream* ostream) {
   if (selection.isNone()) {
     *ostream << "VisibleSelection()";
     return;
   }
@@ skipping 36 matching lines @@
 
 void showTree(const blink::VisibleSelectionInFlatTree& sel) {
   sel.showTreeForThis();
 }
 
 void showTree(const blink::VisibleSelectionInFlatTree* sel) {
   if (sel)
     sel->showTreeForThis();
 }
 #endif