WTF::Vector: Enable static_asserts in a Vector constructor.

third_party/WebKit/Source/wtf/Vector.h

Index: third_party/WebKit/Source/wtf/Vector.h
diff --git a/third_party/WebKit/Source/wtf/Vector.h b/third_party/WebKit/Source/wtf/Vector.h
index 77f86edc6667b9cb5fd5a9b5b3981a5605de3c28..11285caedd6f703b59dca8ed73ed9ab1c3bc6e7d 100644
--- a/third_party/WebKit/Source/wtf/Vector.h
+++ b/third_party/WebKit/Source/wtf/Vector.h
@@ -1194,21 +1194,18 @@ inline Vector<T, inlineCapacity, Allocator>::Vector(size_t size) : Base(size) {
 template <typename T, size_t inlineCapacity, typename Allocator>
 inline Vector<T, inlineCapacity, Allocator>::Vector(size_t size, const T& val)
     : Base(size) {
-  // TODO(yutak): Introduce these assertions. Some use sites call this function
-  // in the context where T is an incomplete type.
-  //
-  // static_assert(!std::is_polymorphic<T>::value ||
-  //               !VectorTraits<T>::canInitializeWithMemset,
-  //               "Cannot initialize with memset if there is a vtable");
-  // static_assert(Allocator::isGarbageCollected ||
-  //               !AllowsOnlyPlacementNew<T>::value ||
-  //               !IsTraceable<T>::value,
-  //               "Cannot put DISALLOW_NEW_EXCEPT_PLACEMENT_NEW objects that "
-  //               "have trace methods into an off-heap Vector");
-  // static_assert(Allocator::isGarbageCollected ||
-  //               !IsPointerToGarbageCollectedType<T>::value,
-  //               "Cannot put raw pointers to garbage-collected classes into "
-  //               "an off-heap Vector.  Use HeapVector<Member<T>> instead.");
+  static_assert(!std::is_polymorphic<T>::value ||
+                !VectorTraits<T>::canInitializeWithMemset,
+                "Cannot initialize with memset if there is a vtable");
+  static_assert(Allocator::isGarbageCollected ||
+                !AllowsOnlyPlacementNew<T>::value ||
+                !IsTraceable<T>::value,
+                "Cannot put DISALLOW_NEW_EXCEPT_PLACEMENT_NEW objects that "
+                "have trace methods into an off-heap Vector");
+  static_assert(Allocator::isGarbageCollected ||
+                !IsPointerToGarbageCollectedType<T>::value,
+                "Cannot put raw pointers to garbage-collected classes into "
+                "an off-heap Vector.  Use HeapVector<Member<T>> instead.");
 
   ANNOTATE_NEW_BUFFER(begin(), capacity(), size);
   m_size = size;