Apply RuleSet changes for active stylesheet changes.

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/dom/Document.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/shadow/ShadowRootInit.h"
@@ skipping 33 matching lines @@
 void StyleEngineTest::SetUp() {
   m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
 }
 
 StyleEngineTest::RuleSetInvalidation
 StyleEngineTest::scheduleInvalidationsForRules(TreeScope& treeScope,
                                                const String& cssText) {
   StyleSheetContents* sheet =
       StyleSheetContents::create(CSSParserContext(HTMLStandardMode, nullptr));
   sheet->parseString(cssText);
-  HeapVector<Member<const RuleSet>> ruleSets;
+  HeapVector<Member<RuleSet>> ruleSets;
   RuleSet& ruleSet = sheet->ensureRuleSet(MediaQueryEvaluator(),
                                           RuleHasDocumentSecurityOrigin);
   ruleSet.compactRulesIfNeeded();
   if (ruleSet.needsFullRecalcForRuleSetInvalidation())
     return RuleSetInvalidationFullRecalc;
   ruleSets.append(&ruleSet);
   styleEngine().scheduleInvalidationsForRuleSets(treeScope, ruleSets);
   return RuleSetInvalidationsScheduled;
 }
 
@@ skipping 234 matching lines @@
             RuleSetInvalidationFullRecalc);
   EXPECT_EQ(scheduleInvalidationsForRules(
                 *shadowRoot, ".a /deep/ span { background: green}"),
             RuleSetInvalidationFullRecalc);
   EXPECT_EQ(scheduleInvalidationsForRules(
                 *shadowRoot, ".a::shadow span { background: green}"),
             RuleSetInvalidationFullRecalc);
 }
 
 }  // namespace blink