Statistics of LayoutBox rare data reasons

third_party/WebKit/Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 151 matching lines @@
       m_text(std::move(str)),
       m_firstTextBox(nullptr),
       m_lastTextBox(nullptr) {
   ASSERT(m_text);
   DCHECK(!node || !node->isDocumentNode());
 
   setIsText();
 
   if (node)
     frameView()->incrementVisuallyNonEmptyCharacterCount(m_text.length());
+  m_rareStat.addReason(ReasonLTAll);
 }
 
 #if DCHECK_IS_ON()
 
 LayoutText::~LayoutText() {
   ASSERT(!m_firstTextBox);
   ASSERT(!m_lastTextBox);
 }
 
 #endif
@@ skipping 1874 matching lines @@
   LayoutRect rect = LayoutRect(
       IntRect(firstRunX(), firstRunY(), linesBox.width(), linesBox.height()));
   LayoutBlock* block = containingBlock();
   if (block && hasTextBoxes())
     block->adjustChildDebugRect(rect);
 
   return rect;
 }
 
 }  // namespace blink