Migrate WTF::HashSet::add() to ::insert() [part 1 of N]

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 5655 matching lines @@
 
 void LayoutBox::clearSnapAreas() {
   if (SnapAreaSet* areas = snapAreas()) {
     for (auto& snapArea : *areas)
       snapArea->m_rareData->m_snapContainer = nullptr;
     areas->clear();
   }
 }
 
 void LayoutBox::addSnapArea(const LayoutBox& snapArea) {
-  ensureRareData().ensureSnapAreas().add(&snapArea);
+  ensureRareData().ensureSnapAreas().insert(&snapArea);
 }
 
 void LayoutBox::removeSnapArea(const LayoutBox& snapArea) {
   if (m_rareData && m_rareData->m_snapAreas) {
     m_rareData->m_snapAreas->remove(&snapArea);
   }
 }
 
 SnapAreaSet* LayoutBox::snapAreas() const {
   return m_rareData ? m_rareData->m_snapAreas.get() : nullptr;
 }
 
 LayoutRect LayoutBox::debugRect() const {
   LayoutRect rect = frameRect();
 
   LayoutBlock* block = containingBlock();
   if (block)
     block->adjustChildDebugRect(rect);
 
   return rect;
 }
 
 bool LayoutBox::shouldClipOverflow() const {
   return hasOverflowClip() || styleRef().containsPaint() || hasControlClip();
 }
 
 }  // namespace blink