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

third_party/WebKit/Source/core/dom/StyleEngineTest.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/dom/StyleEngine.h"
 
 #include "core/css/StyleSheetContents.h"
 #include "core/css/parser/CSSParserContext.h"
 #include "core/dom/Document.h"
 #include "core/dom/NodeComputedStyle.h"
@@ skipping 39 matching lines @@
                                                const String& cssText) {
   StyleSheetContents* sheet =
       StyleSheetContents::create(CSSParserContext::create(HTMLStandardMode));
   sheet->parseString(cssText);
   HeapHashSet<Member<RuleSet>> ruleSets;
   RuleSet& ruleSet = sheet->ensureRuleSet(MediaQueryEvaluator(),
                                           RuleHasDocumentSecurityOrigin);
   ruleSet.compactRulesIfNeeded();
   if (ruleSet.needsFullRecalcForRuleSetInvalidation())
     return RuleSetInvalidationFullRecalc;
-  ruleSets.add(&ruleSet);
+  ruleSets.insert(&ruleSet);
   styleEngine().scheduleInvalidationsForRuleSets(treeScope, ruleSets);
   return RuleSetInvalidationsScheduled;
 }
 
 TEST_F(StyleEngineTest, DocumentDirtyAfterInject) {
   StyleSheetContents* parsedSheet =
       StyleSheetContents::create(CSSParserContext::create(document()));
   parsedSheet->parseString("div {}");
   styleEngine().injectAuthorSheet(parsedSheet);
   document().view()->updateAllLifecyclePhases();
@@ skipping 296 matching lines @@
 
   unsigned afterCount = styleEngine().styleForElementCount();
   EXPECT_EQ(0u, afterCount - beforeCount);
 
   ASSERT_TRUE(t1->computedStyle());
   EXPECT_EQ(makeRGB(0, 128, 0),
             t1->computedStyle()->visitedDependentColor(CSSPropertyColor));
 }
 
 }  // namespace blink