Make customElements.define faster

third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h

Index: third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h b/third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h
index 04ef2808de8af5d37a47cd9d69b9495fbdaf303e..63f7eb023fe74eff65f11336c293a439885e9154 100644
--- a/third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElementTestHelpers.h
@@ -35,7 +35,8 @@ class TestCustomElementDefinitionBuilder
   bool CheckConstructorNotRegistered() override { return true; }
   bool CheckPrototype() override { return true; }
   bool RememberOriginalProperties() override { return true; }
-  CustomElementDefinition* Build(const CustomElementDescriptor&) override;
+  CustomElementDefinition* Build(const CustomElementDescriptor&,
+                                 CustomElementDefinition::Id) override;
 };
 
 class TestCustomElementDefinition : public CustomElementDefinition {
@@ -46,8 +47,8 @@ class TestCustomElementDefinition : public CustomElementDefinition {
       : CustomElementDefinition(descriptor) {}
 
   TestCustomElementDefinition(const CustomElementDescriptor& descriptor,
-                              const HashSet<AtomicString>& observed_attributes)
-      : CustomElementDefinition(descriptor, observed_attributes) {}
+                              HashSet<AtomicString>&& observed_attributes)
+      : CustomElementDefinition(descriptor, std::move(observed_attributes)) {}
 
   ~TestCustomElementDefinition() override = default;