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Unified Diff: third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h

Issue 1998503002: CSS: Checked downcast for ShadowTreeStyleSheetCollection (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 7 months ago
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Index: third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h
diff --git a/third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h b/third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h
index 46acaacf9c08e9676d75f37867828fa89a7bc1d3..c551990e0d732b71a52e63b9f46a6bf9418d4596 100644
--- a/third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h
+++ b/third_party/WebKit/Source/core/dom/TreeScopeStyleSheetCollection.h
@@ -52,6 +52,8 @@ public:
void clearMediaQueryRuleSetStyleSheets();
+ virtual bool isShadowTreeStyleSheetCollection() const { return false; }
+
DECLARE_VIRTUAL_TRACE();
protected:
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