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

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 Apple 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 391 matching lines @@
   }
 }
 
 static HashSet<int>* s_registeredLayerSet;
 
 void GraphicsLayer::registerContentsLayer(WebLayer* layer) {
   if (!s_registeredLayerSet)
     s_registeredLayerSet = new HashSet<int>;
   if (s_registeredLayerSet->contains(layer->id()))
     CRASH();
-  s_registeredLayerSet->add(layer->id());
+  s_registeredLayerSet->insert(layer->id());
 }
 
 void GraphicsLayer::unregisterContentsLayer(WebLayer* layer) {
   DCHECK(s_registeredLayerSet);
   if (!s_registeredLayerSet->contains(layer->id()))
     CRASH();
   s_registeredLayerSet->remove(layer->id());
 }
 
 void GraphicsLayer::setContentsTo(WebLayer* layer) {
@@ skipping 903 matching lines @@
 void showGraphicsLayerTree(const blink::GraphicsLayer* layer) {
   if (!layer) {
     LOG(INFO) << "Cannot showGraphicsLayerTree for (nil).";
     return;
   }
 
   String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
   LOG(INFO) << output.utf8().data();
 }
 #endif