Remove unnecessary override of Node#cloneNode in ShadowRoot's WebIDL

third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h

Index: third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h
diff --git a/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h b/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h
index 420e4a08172bf2773c0d06cab780e0987ba76dd9..c42188879f724ffdbaf23ca0187e87ac7266b24f 100644
--- a/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h
+++ b/third_party/WebKit/Source/core/dom/shadow/ShadowRoot.h
@@ -173,7 +173,7 @@ class CORE_EXPORT ShadowRoot final : public DocumentFragment, public TreeScope {
   void invalidateDescendantInsertionPoints();
 
   // ShadowRoots should never be cloned.
-  Node* cloneNode(bool) override { return nullptr; }
+  // Node* cloneNode(bool, ExceptionState&) override { return nullptr; }

[foolip, 2017/02/16 13:56:12]

Can you remove this and instead add override to the cloneNode above? (It
previously wasn't an override.)

[hayato, 2017/02/17 05:09:14]

Done

 
   Member<ShadowRootRareDataV0> m_shadowRootRareDataV0;
   Member<StyleSheetList> m_styleSheetList;