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

third_party/WebKit/Source/modules/fetch/FetchResponseDataTest.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 "modules/fetch/FetchResponseData.h"
 
 #include "core/dom/DOMArrayBuffer.h"
 #include "modules/fetch/FetchHeaderList.h"
 #include "platform/blob/BlobData.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerResponse.h"
@@ skipping 153 matching lines @@
 
   Vector<String> cacheControlValues;
   corsResponseData->headerList()->getAll("cache-control", cacheControlValues);
   ASSERT_EQ(1U, cacheControlValues.size());
   EXPECT_EQ("no-cache", cacheControlValues[0]);
 }
 
 TEST_F(FetchResponseDataTest, CORSFilterWithExplicitHeaderSet) {
   FetchResponseData* internalResponse = createInternalResponse();
   HTTPHeaderSet exposedHeaders;
-  exposedHeaders.add("set-cookie");
-  exposedHeaders.add("bar");
+  exposedHeaders.insert("set-cookie");
+  exposedHeaders.insert("bar");
 
   FetchResponseData* corsResponseData =
       internalResponse->createCORSFilteredResponse(exposedHeaders);
 
   EXPECT_EQ(internalResponse, corsResponseData->internalResponse());
 
   EXPECT_FALSE(corsResponseData->headerList()->has("set-cookie"));
 
   Vector<String> barValues;
   corsResponseData->headerList()->getAll("bar", barValues);
@@ skipping 68 matching lines @@
   FetchResponseData* opaqueRedirectResponseData =
       internalResponse->createOpaqueRedirectFilteredResponse();
 
   opaqueRedirectResponseData->populateWebServiceWorkerResponse(webResponse);
   EXPECT_EQ(WebServiceWorkerResponseTypeOpaqueRedirect,
             webResponse.responseType());
   CheckHeaders(webResponse);
 }
 
 }  // namespace blink