More switching to standard type traits

third_party/WebKit/Source/platform/graphics/ContiguousContainer.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ContiguousContainer_h
 #define ContiguousContainer_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/Alignment.h"
 #include "wtf/Allocator.h"
@@ skipping 128 matching lines @@
     BaseElementType& first() { return *begin(); }
     const BaseElementType& first() const { return *begin(); }
     BaseElementType& last() { return *rbegin(); }
     const BaseElementType& last() const { return *rbegin(); }
     BaseElementType& operator[](size_t index) { return *(begin() + index); }
     const BaseElementType& operator[](size_t index) const { return *(begin() + index); }
 
     template <class DerivedElementType, typename... Args>
     DerivedElementType& allocateAndConstruct(Args&&... args)
     {
-        static_assert(WTF::IsSubclass<DerivedElementType, BaseElementType>::value,
+        static_assert(std::is_base_of<BaseElementType, DerivedElementType>::value,
             "Must use subclass of BaseElementType.");
         static_assert(alignment % WTF_ALIGN_OF(DerivedElementType) == 0,
             "Derived type requires stronger alignment.");
         size_t allocSize = align(sizeof(DerivedElementType));
         return *new (allocate(allocSize, WTF_HEAP_PROFILER_TYPE_NAME(DerivedElementType))) DerivedElementType(WTF::forward<Args>(args)...);
     }
 
     void removeLast()
     {
         ASSERT(!isEmpty());
@@ skipping 30 matching lines @@
         ASSERT(alignedSize % alignment == 0);
         ASSERT(alignedSize >= size);
         ASSERT(alignedSize < size + alignment);
         return alignedSize;
     }
 };
 
 } // namespace blink
 
 #endif // ContiguousContainer_h