| Index: Source/core/dom/StyleEngine.h
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| diff --git a/Source/core/dom/StyleEngine.h b/Source/core/dom/StyleEngine.h
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| index c7621823000638564efbe61495ac885631c85ae2..40fb7061422249f922d41900ac5eb3d56ae591f5 100644
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| --- a/Source/core/dom/StyleEngine.h
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| +++ b/Source/core/dom/StyleEngine.h
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| @@ -54,8 +54,9 @@ class StyleRuleFontFace;
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|  class StyleSheet;
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|  class StyleSheetContents;
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|  
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| -class CORE_EXPORT StyleEngine final : public CSSFontSelectorClient  {
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| +class CORE_EXPORT StyleEngine final : public NoBaseWillBeGarbageCollectedFinalized<StyleEngine>, public CSSFontSelectorClient  {
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|      WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(StyleEngine);
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| +    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(StyleEngine);
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|  public:
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|  
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|      class IgnoringPendingStylesheet : public TemporaryChange<bool> {
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| 
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