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

third_party/WebKit/Source/web/WebAssociatedURLLoaderImpl.cpp

 /*
  * Copyright (C) 2010, 2011, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 203 matching lines @@
     return;
   }
 
   HTTPHeaderSet exposedHeaders;
   extractCorsExposedHeaderNamesList(response, exposedHeaders);
   HTTPHeaderSet blockedHeaders;
   for (const auto& header : response.httpHeaderFields()) {
     if (FetchUtils::isForbiddenResponseHeaderName(header.key) ||
         (!isOnAccessControlResponseHeaderWhitelist(header.key) &&
          !exposedHeaders.contains(header.key)))
-      blockedHeaders.add(header.key);
+      blockedHeaders.insert(header.key);
   }
 
   if (blockedHeaders.isEmpty()) {
     // Use the original ResourceResponse.
     m_client->didReceiveResponse(WrappedResourceResponse(response));
     return;
   }
 
   // If there are blocked headers, copy the response so we can remove them.
   WebURLResponse validatedResponse = WrappedResourceResponse(response);
@@ skipping 261 matching lines @@
   // there could be a WebURLLoader instance behind the
   // DocumentThreadableLoader instance. So, for safety, we chose to just
   // crash here.
   CHECK(ThreadState::current());
 
   m_observer->dispose();
   m_observer = nullptr;
 }
 
 }  // namespace blink