Migrate WTF::HashMap::add() to ::insert()

third_party/WebKit/Source/core/svg/SVGElementProxy.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/svg/SVGElementProxy.h"
 
 #include "core/dom/IdTargetObserver.h"
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGResourceClient.h"
 #include "platform/loader/fetch/FetchInitiatorTypeNames.h"
@@ skipping 66 matching lines @@
   if (!m_isLocal) {
     if (m_document)
       m_document->addClient(client);
     return;
   }
   TreeScope* clientScope = client->treeScope();
   if (!clientScope)
     return;
   // Ensure sure we have an observer registered for this tree scope.
   auto& scopeObserver =
-      m_observers.add(clientScope, nullptr).storedValue->value;
+      m_observers.insert(clientScope, nullptr).storedValue->value;
   if (!scopeObserver)
     scopeObserver = new IdObserver(*clientScope, *this);
 
-  auto& observer = m_clients.add(client, nullptr).storedValue->value;
+  auto& observer = m_clients.insert(client, nullptr).storedValue->value;
   if (!observer)
     observer = scopeObserver;
 
   DCHECK(observer && scopeObserver);
 
   // If the client moved to a different scope, we need to unregister the old
   // observer and transfer any clients from it before replacing it. Thus any
   // clients that remain to be removed will be transferred to the new observer,
   // and hence removed from it instead.
   if (observer != scopeObserver) {
@@ skipping 88 matching lines @@
 void SVGElementProxySet::notifyContentChanged(TreeScope& treeScope) {
   for (SVGElementProxy* proxy : m_elementProxies)
     proxy->contentChanged(treeScope);
 }
 
 DEFINE_TRACE(SVGElementProxySet) {
   visitor->trace(m_elementProxies);
 }
 
 }  // namespace blink