WTF TypeTraits: Fix IsTrivially{DefaultConstructible,Destructible}.

third_party/WebKit/Source/wtf/TypeTraitsTest.cpp

Index: third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
diff --git a/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp b/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
index 79fddfcba97cd1be3d60843586d0d982e06de690..165ec0d5c1c1c24f09562906bec8962e49e9d938 100644
--- a/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
+++ b/third_party/WebKit/Source/wtf/TypeTraitsTest.cpp
@@ -164,6 +164,22 @@ static_assert(IsMoveAssignable<AssignableImplicit>::value, "AssignableImplicit i
 
 #endif // !COMPILER(MSVC) || COMPILER(CLANG)
 
+class DefaultConstructorDeleted final {
+private:
+    DefaultConstructorDeleted() = delete;
+};
+
+class DestructorDeleted final {
+private:
+    ~DestructorDeleted() = delete;
+};
+
+static_assert(!IsTriviallyDefaultConstructible<DefaultConstructorDeleted>::value,
+    "DefaultConstructorDeleted must not be trivially default constructible.");
+
+static_assert(!IsTriviallyDestructible<DestructorDeleted>::value,
+    "DestructorDeleted must not be trivially destructible.");
+
 } // anonymous namespace
 
 } // namespace WTF