Oilpan: IDL union objects should be put in HeapVector

Source/bindings/tests/results/core/UnionTypesCore.h

Index: Source/bindings/tests/results/core/UnionTypesCore.h
diff --git a/Source/bindings/tests/results/core/UnionTypesCore.h b/Source/bindings/tests/results/core/UnionTypesCore.h
index 1adc624d1788882fec4deebe41ea899ae0466155..93e0fc59d759da3b537cb0a4604a4a7b8da398e4 100644
--- a/Source/bindings/tests/results/core/UnionTypesCore.h
+++ b/Source/bindings/tests/results/core/UnionTypesCore.h
@@ -908,4 +908,24 @@ public:
 
 } // namespace blink
 
+// We need to set canInitializeWithMemset=true because HeapVector supports
+// items that can initialize with memset or have a vtable. It is safe to
+// set canInitializeWithMemset=true for a union type object in practice.
+// See https://codereview.chromium.org/1118993002/#msg5 for more details.
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::ArrayBufferOrArrayBufferViewOrDictionary);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::BooleanOrStringOrUnrestrictedDouble);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::DoubleOrString);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::LongOrTestDictionary);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::NodeOrNodeList);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::StringOrArrayBufferOrArrayBufferView);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::StringOrDouble);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::StringOrStringSequence);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestEnumOrDouble);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestInterface2OrUint8Array);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestInterfaceGarbageCollectedOrString);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestInterfaceOrLong);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestInterfaceOrTestInterfaceEmpty);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::TestInterfaceWillBeGarbageCollectedOrTestDictionary);
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::UnrestrictedDoubleOrString);
+
 #endif // UnionTypeCore_h