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

third_party/WebKit/Source/core/frame/SubresourceIntegrity.cpp

 // Copyright 2014 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/frame/SubresourceIntegrity.h"
 
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/ExecutionContext.h"
@@ skipping 397 matching lines @@
       skipWhile<UChar, isValueCharacter>(position, end);
       if (begin != position && executionContext) {
         logErrorToConsole(
             "Ignoring unrecogized 'integrity' attribute option '" +
                 String(begin, position - begin) + "'.",
             *executionContext);
       }
     }
 
     IntegrityMetadata integrityMetadata(digest, algorithm);
-    metadataSet.add(integrityMetadata.toPair());
+    metadataSet.insert(integrityMetadata.toPair());
   }
 
   if (metadataSet.size() == 0 && error)
     return IntegrityParseNoValidResult;
 
   return IntegrityParseValidResult;
 }
 
 }  // namespace blink